update

Reviewed-on: #12

Project.toml

@@ -1,23 +1,35 @@
 name = "GeneralUtils"
 uuid = "c6c72f09-b708-4ac8-ac7c-2084d70108fe"
-version = "0.3.2"
+version = "0.6.1"
 authors = ["tonaerospace <tonaerospace.etc@gmail.com>"]
 
 [deps]
+AWS = "fbe9abb3-538b-5e4e-ba9e-bc94f4f92ebc"
+AWSS3 = "1c724243-ef5b-51ab-93f4-b0a88ac62a95"
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
+Graphs = "86223c79-3864-5bf0-83f7-82e725a168b6"
+HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"
 JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
+LibPQ = "194296ae-ab2e-5f79-8cd4-7183a0a5a0d1"
 NATS = "55e73f9c-eeeb-467f-b4cc-a633fde63d2a"
 PrettyPrinting = "54e16d92-306c-5ea0-a30b-337be88ac337"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Revise = "295af30f-e4ad-537b-8983-00126c2a3abe"
 SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
+StringDistances = "88034a9c-02f8-509d-84a9-84ec65e18404"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
-JSON = "1.3.0"
+AWS = "1.99.0"
+AWSS3 = "0.11.6"
+Graphs = "1.14.0"
+HTTP = "2.5.0 - 2.9.9"
+JSON = "1.3.0 - 1.9.9"
+LibPQ = "1.18.0"
 NATS = "0.1.0"
 Revise = "3.13.2"
+StringDistances = "1.0.0"

src/GeneralUtils.jl

@@ -21,6 +21,8 @@ using .llmUtil
 include("interface.jl")
 using .interface
 
+include("garageS3.jl")
+using .garageS3
 
 #------------------------------------------------------------------------------------------------100
 

src/dbUtil.jl

@@ -1,13 +1,107 @@
 module dbUtil
   
-export dictToPostgresKeyValueString, generateInsertSQL, generateUpdateSQL
+export dictToPostgresKeyValueString, generateInsertSQL, generateUpdateSQL, find_text_vector_similarity,
+        execute_postgres_sql
 
 using JSON, DataStructures, Distributions, Random, Dates, UUIDs, DataFrames,
-      SHA
+      SHA, NATS, LibPQ
 using ..util
 #[PENDING] update code to use JSON
 # ---------------------------------------------- 100 --------------------------------------------- #
 
+""" Execute SQL against a PostgreSQL database using LibPQ connection string.
+
+# Arguments
+- `pg_conn_str::AbstractString`: PostgreSQL connection string in format "host=... port=... dbname=... user=... password=..."
+- `sql::AbstractString`: SQL query to execute
+
+# Returns
+- `LibPQ.Result` on success, `nothing` on failure
+
+# Example
+```julia
+pg_conn_str = "host=localhost port=5432 dbname=mydb user=myuser password=mypass"
+sql = "SELECT * FROM wine;"
+result = execute_postgres_sql(pg_conn_str, sql)
+```
+"""
+function execute_postgres_sql(pg_conn_str::T, sql::T) where {T<:AbstractString}
+  db_connection = LibPQ.Connection(pg_conn_str)
+  result = nothing
+  try
+    result = LibPQ.execute(db_connection, sql)  
+  catch e
+    @error e
+    LibPQ.close(db_connection)
+  end
+  
+  LibPQ.close(db_connection)
+  return result
+end
+
+
+""" find_text_vector_similarity
+
+Find the most similar text records in a PostgreSQL database using vector embeddings and cosine similarity.
+
+This function computes an embedding for the input text using the provided embedding function,
+then queries the database to find records with the most similar vector representations using
+PostgreSQL's cosine similarity operator (`<->`).
+
+# Arguments
+- `text::AbstractString`: The input text to find similar records for
+- `tablename::AbstractString`: Name of the database table containing the embedding column
+- `embeddingColumnName::AbstractString`: Name of the column storing vector embeddings
+- `executesql::Function`: Function that executes SQL queries and returns results
+- `get_embedding::Function`: Function that generates embeddings for text inputs
+
+# Keyword Arguments
+- `limit::Integer=1`: Maximum number of similar records to return
+
+# Returns
+- `DataFrame`: Database records ordered by similarity (most similar first), including a `distance` column
+  where smaller values indicate higher similarity
+
+# Example
+```julia
+# Assume you have embedding and SQL execution functions
+text = "a rich structured red wine"
+tablename = "wine"
+embeddingColumnName = "description_embedding"
+
+df = find_text_vector_similarity(
+    text, tablename, embeddingColumnName,
+    executesql, get_embedding;
+    limit = 5
+)
+
+# Result contains columns from the table plus a 'distance' column
+# where distance = 1 - cosine_similarity (smaller = more similar)
+```
+"""
+function find_text_vector_similarity(text::T1, tablename::T2, embeddingColumnName::T3,
+  executesql::Function, get_embedding; 
+  limit::Integer=1
+  )::DataFrame where {T1<:AbstractString, T2<:AbstractString, T3<:AbstractString}
+  # get embedding from LLM service
+  _embedding = get_embedding([text])
+  _embedding = _embedding["data"][1]["embedding"]
+  _embedding = "$_embedding"
+
+  embedding = _embedding[4:end] # remove 'Any' from Any[...]
+
+  # check whether there is close enough vector already store in executesql. if no, add, else skip 
+  sql = """
+        SELECT *, $embeddingColumnName <-> '$embedding' as distance
+        FROM $tablename
+        ORDER BY distance LIMIT $limit;
+        """
+  response = executesql(sql)
+  df = DataFrame(response)
+
+  return df
+end
+
 
 """
 dictToPostgresKeyValueString - Convert dictionary to PostgreSQL key-value string format
@@ -121,7 +215,8 @@ function generateInsertSQL(table_name::String, columnToInsert::Vector{Symbol}, d
   for (key, value) in data
     if key ∈ columnToInsert
       push!(columns, string(key))
-      push!(values, "'$value'") #[] number should not wrapped in ''
+      value_str = isa(value, AbstractString) ? "'$value'" : "$value"
+      push!(values, value_str)
     end
   end
   
@@ -131,6 +226,22 @@ function generateInsertSQL(table_name::String, columnToInsert::Vector{Symbol}, d
   return "INSERT INTO $table_name ($columns_str) VALUES ($values_str);"
 end
 
+function generateInsertSQL(table_name::String, data::AbstractDict{String, Any})
+  columns = String[]
+  values = String[]
+
+  for (key, value) in data
+    push!(columns, string(key))
+    value_str = isa(value, AbstractString) ? "'$value'" : "$value"
+    push!(values, value_str)
+  end
+  
+  columns_str = join(columns, ", ")
+  values_str = join(values, ", ")
+    
+    return "INSERT INTO $table_name ($columns_str) VALUES ($values_str);"
+end
+
 
 # ---------------------------------------------- 100 --------------------------------------------- #
 
@@ -185,5 +296,30 @@ function generateUpdateSQL(table_name::String, pk_column::String, pk_value,
     return "UPDATE $table_name SET $set_clause WHERE $pk_column = $pk_val_str;"
 end
 
+function generateUpdateSQL(table_name::String, pk_dict::AbstractDict{String, Any}, 
+                          data::AbstractDict{String, Any})
+    # Build SET clause
+    set_parts = String[]
+    for (key, value) in data
+        if key ∉ keys(pk_dict)
+            value_str = isa(value, AbstractString) ? "'$value'" : "$value"
+            push!(set_parts, "$(string(key)) = $value_str")
+        end
+    end
+    
+    set_clause = join(set_parts, ", ")
+    
+    # Build WHERE clause for composite keys
+    where_parts = String[]
+    for (col, val) in pk_dict
+        val_str = isa(val, AbstractString) ? "'$val'" : "$val"
+        push!(where_parts, "$(string(col)) = $val_str")
+    end
+    
+    where_clause = join(where_parts, " AND ")
+    
+    return "UPDATE $table_name SET $set_clause WHERE $where_clause;"
+end
+
 
 end   # module

src/garageS3.jl

@@ -0,0 +1,254 @@
+module garageS3
+
+export
+    GarageStorage,
+    put_file,
+    get_file,
+    list_files,
+    delete_file
+
+using AWS, AWSS3
+# ---------------------------------------------- 100 --------------------------------------------- #
+
+# Garage uses Path-Style routing (https://s3-api.my-domain.com/bucket/key).
+# this file use local AWS config
+
+""" Example
+const storage = GarageStorage(
+    "https://s3-api.yiem.cc",
+    "GKb080154a2e5b19100b1b2c6e",     # key ID  (create at garage-ui.yiem.cc)
+    "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",   # key ID's secret key
+    "sommpanion-s3"
+)
+
+# Safe to run inside concurrent HTTP handlers (e.g., Oxygen.jl, HTTP.jl)
+put_file(storage, "users-1005.json", "{\"status\": \"active\"}")
+keys = list_files(storage)
+data = String(get_file(storage, "users-1004.json"))
+
+println("Read back: ", data)
+println("Bucket keys: ", keys)
+
+# test with curl
+curl -v \
+  -H 'Host: sommpanion-s3.s3-web.yiem.cc' \
+  http://192.168.88.106:3902/users-1002.json
+
+
+# test with a browser
+https://s3-web.mydomain.com/my_bucket_name/users-1002.json
+
+"""
+
+# ===================================================================
+# 1. Custom GarageConfig Definition (Thread-Safe, No Global State)
+# ===================================================================
+
+struct SimpleCredentials
+    access_key_id::String
+    secret_key::String
+    token::String
+end
+
+struct GarageConfig <: AWS.AbstractAWSConfig
+    endpoint::String
+    region::String
+    credentials::SimpleCredentials
+end
+
+# Required extensions for AWS.jl pipeline
+AWS.refresh!(c::SimpleCredentials; force::Bool=false) = c
+AWS.credentials(c::SimpleCredentials) = c
+AWS.check_credentials(c::SimpleCredentials) = c
+AWS.region(aws::GarageConfig) = aws.region
+AWS.credentials(aws::GarageConfig) = aws.credentials
+
+""" Generate the base URL for a Garage S3 service request.
+
+# Arguments
+- `aws::GarageConfig`
+  The Garage configuration containing the endpoint.
+- `service::String`
+  The AWS service name (e.g., `"s3"`).
+- `region::String`
+  The AWS region string.
+
+# Return
+- `String`: The stripped endpoint URL (trailing slashes removed).
+"""
+function AWS.generate_service_url(aws::GarageConfig, service::String, region::String)
+    return strip(aws.endpoint, '/')
+end
+
+""" Generate the full service URL including the resource path for a Garage S3 request.
+
+# Arguments
+- `aws::GarageConfig`
+  The Garage configuration containing the endpoint.
+- `service::String`
+  The AWS service name (e.g., `"s3"`).
+- `resource::String`
+  The S3 resource path (e.g., `"/bucket/key"`).
+
+# Return
+- `String`: The full URL combining the endpoint and resource path.
+"""
+function AWS.generate_service_url(aws::GarageConfig, service::String, resource::String)
+    endpoint = strip(aws.endpoint, '/')
+    resource_path = startswith(resource, '/') ? resource : "/" * resource
+    return string(endpoint, resource_path)
+end
+
+# ===================================================================
+# 2. Thread-Safe Storage Client Wrapper
+# ===================================================================
+
+struct GarageStorage
+    config::GarageConfig
+    bucket::String
+end
+""" Create a thread-safe Garage S3 storage client.
+
+# Arguments
+- `endpoint::String`
+  The Garage S3 API endpoint URL (e.g., `"https://s3-api.yiem.cc"`).
+- `key::String`
+  The Garage access key ID (created via garage-ui).
+- `secret::String`
+  The secret key corresponding to the access key.
+- `bucket::String`
+  The name of the S3 bucket to use.
+
+# Keyword Arguments
+- `region::String = "garage"`
+  The region identifier for the Garage instance.
+
+# Return
+- `GarageStorage`: A thread-safe storage client instance.
+
+# Examples
+```jldoctest
+julia> storage = GarageStorage("https://s3-api.yiem.cc", "GKb080154a2e5b19100b1b2c6e", "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1", "sommpanion-s3")
+GarageStorage(GarageConfig(...), "sommpanion-s3")
+```
+"""
+function GarageStorage(endpoint::String, key::String, secret::String, bucket::String; region::String="garage")
+    creds = SimpleCredentials(key, secret, "")
+    config = GarageConfig(endpoint, region, creds)
+    return GarageStorage(config, bucket)
+end
+
+""" Upload an object to the Garage S3 bucket.
+
+# Arguments
+- `storage::GarageStorage`
+  The storage client instance.
+- `key::String`
+  The object key (name) in the bucket. Must not contain slashes (`/`).
+- `data::Union{String, Vector{UInt8}}`
+  The data to upload.
+
+# Return
+- `Nothing` if the key contains slashes (upload aborted with warning).
+- Prints a success message if the upload completes.
+
+# Notes
+- Slashes in keys are prohibited to prevent S3 listing issues. Use a flat naming
+  convention (e.g., `"users-1002.json"` instead of `"users/1002.json"`).
+
+# Examples
+```julia
+julia> put_file(storage, "test.json", "{\"status\": \"active\"}")
+Successfully uploaded:  test.json
+```
+"""
+function put_file(storage::GarageStorage, key::String, data::Union{String, Vector{UInt8}})
+    # Check if the key contains a slash (virtual folder character)
+    if occursin('/', key)
+        @warn "Upload aborted! Slashes ('/') are not allowed in keys ('$key') to prevent S3 listing issues. Use a flat naming convention instead (e.g., 'users-1002.json')."
+        return nothing
+    end
+    
+    # Proceed if the key is flat
+    s3_put(storage.config, storage.bucket, key, data)
+    println("Successfully uploaded: ", key)
+end
+
+""" Download an object from the Garage S3 bucket.
+
+# Arguments
+- `storage::GarageStorage`
+  The storage client instance.
+- `key::String`
+  The object key (name) in the bucket.
+
+# Return
+- `Vector{UInt8}`: The raw bytes of the downloaded object.
+
+# Examples
+```julia
+julia> data = String(get_file(storage, "test.json"))
+"\"{\\\"status\\\": \\\"active\\\"}\""
+```
+"""
+function get_file(storage::GarageStorage, key::String)::Vector{UInt8}
+    return s3_get(storage.config, storage.bucket, key)
+end
+
+""" List all object keys in the Garage S3 bucket.
+
+# Arguments
+- `storage::GarageStorage`
+  The storage client instance.
+
+# Return
+- `Vector{String}`: A list of object keys (file names) in the bucket.
+
+# Examples
+```julia
+julia> keys = list_files(storage)
+3-element Vector{String}:
+ "test1.json"
+ "test2.json"
+ "users-1002.json"
+```
+"""
+function list_files(storage::GarageStorage)
+    # Approach 2: s3_list_objects returns a Vector of Dicts with object details
+    objects = s3_list_objects(storage.config, storage.bucket)
+    return [obj["Key"] for obj in objects]
+end
+
+""" Delete an object from the Garage S3 bucket.
+
+# Arguments
+- `storage::GarageStorage`
+  The storage client instance.
+- `key::String`
+  The object key (name) to delete.
+
+# Examples
+```julia
+julia> delete_file(storage, "test.json")
+```
+"""
+function delete_file(storage::GarageStorage, key::String)
+    s3_delete(storage.config, storage.bucket, key)
+end
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+end # module GarageS3

src/interface.jl

@@ -5,7 +5,7 @@ export noNegative!, randomWithProb, randomChoiceWithProb, findIndex, limitvalue,
         replaceLessThan, replaceBetween, cartesianAssign!, sumAlongDim3, matMul3Dto3DmanyTo1batch,
         matMul_3Dto4D_batchwise, isNotEqual, linearToCartesian, vectorMax, findMax,
         multiply_last, multiplyRandomElements, replaceElements, replaceElements!, isBetween,
-        isLess, allTrue, getStringBetweenCharacters, JSON3read_stringKey, mkDictPath!, 
+        isLess, allTrue, getStringBetweenCharacters, mkDictPath!, dict_to_string_html,
         getDictPath, detectKeywordVariation, textToDict, dictify, ordereddictify
 
 using JSON, DataStructures, Distributions, Random, Dates, UUIDs, DataFrames, CSV
@@ -150,14 +150,31 @@ end
 
 # ---------------------------------------------- 100 --------------------------------------------- #
 
-""" read_textfile_by_index(folder_path::String, read_file_number::Integer=1)
+""" Reads the x-th text file from a folder, where files are listed by the OS
+without explicit sorting. Returns the file number, filename, and content.
 
-    with multiple text file in a folder,
+# Arguments
-    this function read x_th text file in a folder (filename is sorted by OS)
+- `folder_path::String`
+  Path to the folder containing text files.
+- `read_file_number::Integer=1`
+  Which file to read (1-based index). Defaults to the first file.
 
-    # Example
+# Return
-        utils.read_textfile_by_index(cleaned_data_path, 2)
+- A tuple of `(file_number::Integer, filename::String, content)` where:
-    read 2nd txt file in a folder
+  - `file_number` is the index of the file that was read
+  - `filename` is the actual filename string
+  - `content` is a vector of lines from the file (or `nothing` if error)
+
+# Notes
+- Errors if `folder_path` is not a valid directory.
+- Errors if `read_file_number` exceeds the number of files in the folder.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> result = read_textfile_by_index("/path/to/folder", 2)
+(2, "sample.txt", ["line1", "line2", ...])
+```
 """
 function read_textfile_by_index(folder_path::String, read_file_number::Integer=1)
     if isdir(folder_path)
@@ -186,40 +203,39 @@ function read_textfile_by_index(folder_path::String, read_file_number::Integer=1
 end
 
 
-""" Recursively convert dictionary-like variable (e.g. JSON.Object) into a dictionary.
+""" Recursively convert dictionary-like variable (e.g. JSON.Object) into an OrderedDict.
 
-# What it does
+The function walks any nested structure composed of `AbstractDict` (e.g., `JSON.Object`,
-  - Walks any nested structure composed of `AbstractDict` (e.g., `JSON.Object`,
+`Dict`, `OrderedDict`) and `AbstractArray` and produces a new tree where
-    `Dict`, `OrderedDict`) and `AbstractArray` and produces a new tree where
+every dictionary-like node is an `OrderedDict` and every array-like node is a `Vector{Any}`.
-    every dictionary-like node is a plain `Dict` and every array-like node is a
+Scalar values (numbers, strings, booleans, `nothing`, etc.) are returned unchanged.
-    `Vector{Any}`. Scalar values (numbers, strings, booleans, `nothing`, etc.)
+Does **not** mutate the input; it always allocates new containers.
-    are returned unchanged.
-  - Does **not** mutate the input; it always allocates new containers.
 
 # Arguments
 - `x`
-  Any Julia value. If `x` is an `AbstractDict` it will be converted to a `Dict`;
+  Any Julia value. If `x` is an `AbstractDict` it will be converted to an `OrderedDict`;
   if it is an `AbstractArray` its elements will be processed recursively.
 
 # Keyword Arguments
-- `stringkey::Bool=false`
+- `keytype::Type=Any`
-  If `true`, every dictionary key is converted to `String` via `string(k)`.
+  The key type for the output OrderedDict. Use `String` for `OrderedDict{String,Any}`, 
-  If `false`, original key objects are preserved (useful when keys are already
+  `Symbol` for `OrderedDict{Symbol,Any}`, or `Any` to preserve original key types.
-  `String`, `Symbol`, or other types you want to keep).
+- `sort_order::Union{Nothing, Vector}=nothing`
+  Vector of keys specifying the desired order. Keys are arranged in the specified order 
+  first, followed by any remaining keys.
 
 # Return
-- A newly allocated nested structure composed of `Dict{Any,Any}` and
+- A newly allocated nested structure composed of `OrderedDict{keytype,Any}` and `Vector{Any}`
-  `Vector{Any}` that mirrors the input shape but uses plain Julia containers.
+  that mirrors the input shape but uses ordered Julia containers.
 
 # Notes
 - The function treats any `AbstractDict` as a mapping source, so it works with
   `JSON.Object`, `Dict`, `OrderedDict`, etc.
-- Arrays are returned as `Vector{Any}` with their elements processed
+- Arrays are returned as `Vector{Any}` with their elements processed recursively.
-  recursively.
 
 # Examples
 ```jldoctest
-julia> using JSON
+julia> using JSON, DataStructures
 julia> d = Dict(
             "a" => 4,
             "b" => 6,
@@ -234,92 +250,105 @@ julia> d = Dict(
                     )
           )
 
-julia jsonstring = JSON.json(d)
+julia> jsonstring = JSON.json(d)
 julia> A1 = JSON.parse(jsonstring)  # A1 type is JSON.Object
-julia> A2 = dictify(A1)
+julia> A2 = dictify(A1; keytype=String)
-Dict{Any,Any} with 3 entries:
+OrderedDict{String,Any} with 3 entries:
   "a" => 4
   "b" => 6
-  "c" => Dict("d"=>7, "e"=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
+  "c" => OrderedDict("d"=>7, "e"=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
 
-julia> A3 = dictify(A1; stringkey=false)  # preserves original key objects
+julia> A3 = dictify(A1; keytype=Symbol)
-julia> B1 = dictify(d; stringkey=true)  # convert all keys in to string
+OrderedDict{Symbol,Any} with 3 entries:
-Dict{Any, Any} with 3 entries:
+  :a => 4
-  "c" => Dict{Any, Any}("e"=>Dict{Any, Any}("f"=>"hey", "g"=>Dict{Any, Any}("world"=>Any[1, "2", 3, Dict{Any, Any}("dd"=>4.7)])), "d"=>7)
+  :b => 6
-  "b" => 6
+  :c => OrderedDict(:d=>7, :e=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
-  "a" => 4
+
+julia> B1 = dictify(d; keytype=String)
+OrderedDict{String, Any} with 3 entries:
+```
+
+**With sort_order:**
+```jldoctest
+julia> d = Dict("a"=>1, "b"=>2, "c"=>3)
+julia> dictify(d; sort_order=["c", "a"])
+OrderedDict{String,Int} with 3 entries:
+  "c" => 3
+  "a" => 1
+  "b" => 2
 ```
 """
-function dictify(x; stringkey::Bool=false)
+function dictify(x::T; keytype::Type=Any, sort_order::Union{Nothing, Vector}=nothing
-    # Dict-like objects
+  )::OrderedDict where {T<:AbstractDict}
-    if x isa AbstractDict
+  # Dict-like objects
-        # choose output key type container (String keys when requested)
+  out = OrderedDict{keytype, Any}()
-        out = Dict{Any,Any}()
+      
-        for (k,v) in x
+  # 1. Process and normalize all keys from the input dictionary
-            newk = stringkey ? string(k) : k
+  processed_dict = OrderedDict{keytype, Any}()
-            out[newk] = dictify(v; stringkey=stringkey)
+  for (k, v) in x
-        end
+      if keytype === String
-        return out
+          newk = string(k)
-    # Arrays / vectors: map elements recursively and return a Vector{Any}
+      elseif keytype === Symbol
-    elseif x isa AbstractArray
+          newk = Symbol(string(k))
-        return [dictify(element; stringkey=stringkey) for element in x]
+      else
-    # everything else: return as-is (primitives, numbers, strings, etc.)
+          newk = k
-    else
+      end
-        return x
+      processed_dict[newk] = dictify(v; keytype=keytype, sort_order=sort_order)
-    end
+  end
+
+  # 2. If a sort order is specified, apply it
+  if !isnothing(sort_order)
+      # Normalize the sort_order elements to match the requested keytype
+      normalized_order = map(sort_order) do tk
+          if keytype === String
+              return string(tk)
+          elseif keytype === Symbol
+              return Symbol(string(tk))
+          else
+              return tk
+          end
+      end
+
+      # First, insert keys that match the requested order
+      for target_key in normalized_order
+          if haskey(processed_dict, target_key)
+              out[target_key] = processed_dict[target_key]
+          end
+      end
+
+      # Then, append any remaining keys that weren't in the sort_order
+      for (k, v) in processed_dict
+          if !haskey(out, k)
+              out[k] = v
+          end
+      end
+  else
+      # If no sort order is given, just use the processed dict
+      out = processed_dict
+  end
+
+  return out
 end
 
-
+function dictify(x::T; keytype::Type=Any, sort_order::Union{Nothing, Vector}=nothing
-
+  ) where {T<:AbstractArray}
-
+  return [dictify(element; keytype=keytype, sort_order=sort_order) for element in x]
-# ---------------------------------------------- 100 --------------------------------------------- #
-
-""" Array_to_JSON_str(data::AbstractArray)
-
-    encode Array to JSON String
-
-    # Example
-
-        a = [1.23 4.7889; 9987.1 -123.07; -0.0027 -6.75]
-        jsonStr = Array_to_JSON_str(a)
-        jsonStr = "{\"Array\":[[1.23,9987.1,-0.0027],[4.7889,-123.07,-6.75]],\"size\":[3,2]}"
-"""
-function Array_to_JSON_str(data::AbstractArray)
-  d = Dict("Array"=> data, "size"=>size(data))
-  jsonStr = JSON.json(d)
-  return jsonStr
 end
 
-# ---------------------------------------------- 100 --------------------------------------------- #
+function dictify(x; keytype::Type=Any, sort_order::Union{Nothing, Vector}=nothing
-
+  )
-""" JSON_str_to_Array(json_str::String)
+  return x
-
-    decode JSON String to Array
-
-    # Example
-
-        jsonStr = "{\"Array\":[[1.23,9987.1,-0.0027],[4.7889,-123.07,-6.75]],\"size\":[3,2]}"
-        a = JSON_str_to_Array(jsonStr)
-
-"""
-function JSON_str_to_Array(jsonStr::String)
-    jsonObj = JSON.parse(jsonStr)
-    a = Array(jsonObj.Array)
-    array = hcat(a...)
-    return array
 end
 
 # ---------------------------------------------- 100 --------------------------------------------- #
 
 """ Recursively convert dictionary-like variable (e.g. JSON.Object) into a dictionary.
-
+The function walks any nested structure composed of AbstractDict (e.g., JSON.Object,
-# What it does
+Dict, OrderedDict) and AbstractArray and produces a new tree where
-  - Walks any nested structure composed of AbstractDict (e.g., JSON.Object,
+every dictionary-like node is an OrderedDict{Any,Any} and every array-like
-    Dict, OrderedDict) and AbstractArray and produces a new tree where
+node is a Vector{Any}. Scalar values (numbers, strings, booleans,
-    every dictionary-like node is an OrderedDict{Any,Any} and every array-like
+nothing, etc.) are returned unchanged.
-    node is a Vector{Any}. Scalar values (numbers, strings, booleans,
+Does **not** mutate the input; it always allocates new containers.
-    nothing, etc.) are returned unchanged.
-  - Does **not** mutate the input; it always allocates new containers.
 
 # Arguments
 - `x`
@@ -328,13 +357,11 @@ end
   processed recursively.
 
 # Keyword Arguments
-- `stringkey::Bool=false`
+- `keytype::Type=Any`
-  If `true`, every dictionary key is converted to `String` via `string(k)`.
+  The key type for the output Dict. Use `String` for `OrderedDict{String,Any}`, `Symbol` for `OrderedDict{Symbol,Any}`, or `Any` to preserve original key types.
-  If `false`, original key objects are preserved (useful when keys are already
-  `String`, `Symbol`, or other types you want to keep).
 
 # Return
-- A newly allocated nested structure composed of `OrderedDict{Any,Any}` and
+- A newly allocated nested structure composed of `OrderedDict{keytype,Any}` and
   `Vector{Any}` that mirrors the input shape but uses ordered Julia containers.
 
 # Notes
@@ -361,41 +388,52 @@ julia> d = Dict(
 
 julia jsonstring = JSON.json(d)
 julia> A1 = JSON.parse(jsonstring)  # A1 type is JSON.Object
-julia> A2 = OrderedDict(A1)
+julia> A2 = ordereddictify(A1; keytype=String)
-Dict{Any,Any} with 3 entries:
+OrderedDict{String,Any} with 3 entries:
   "a" => 4
   "b" => 6
-  "c" => Dict("d"=>7, "e"=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
+  "c" => OrderedDict("d"=>7, "e"=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
 
-julia> A3 = OrderedDict(A1; stringkey=false)  # preserves original key objects
+julia> A3 = ordereddictify(A1; keytype=Symbol)
-julia> B1 = OrderedDict(d; stringkey=true)  # convert all keys in to string
+OrderedDict{Symbol,Any} with 3 entries:
-Dict{Any, Any} with 3 entries:
+  :a => 4
-  "c" => Dict{Any, Any}("e"=>Dict{Any, Any}("f"=>"hey", "g"=>Dict{Any, Any}("world"=>Any[1, "2", 3, Dict{Any, Any}("dd"=>4.7)])), "d"=>7)
+  :b => 6
+  :c => OrderedDict(:d=>7, :e=>Dict("f"=>"hey", "g"=>Dict("world"=>[1, "2", 3, 4.7])))
+
+julia> B1 = ordereddictify(d; keytype=String)
+OrderedDict{String, Any} with 3 entries:
+  "c" => OrderedDict{String, Any}("e"=>OrderedDict{String, Any}("f"=>"hey", "g"=>OrderedDict{String, Any}("world"=>Any[1, "2", 3, OrderedDict{String, Any}("dd"=>4.7)])), "d"=>7)
   "b" => 6
   "a" => 4
 ```
 Ref. https://github.com/andyferris/Dictionaries.jl
 """
-function ordereddictify(x; stringkey::Bool=false)
+function ordereddictify(x; keytype::Type=Any)
     # Dict-like objects
     if x isa AbstractDict
-        # choose output key type container (String keys when requested)
+        # choose output key type container
-        out = OrderedDict{Any,Any}()
+        out = OrderedDict{keytype,Any}()
         for (k,v) in x
-            newk = stringkey ? string(k) : k
+            if keytype === String
-            out[newk] = ordereddictify(v; stringkey=stringkey)
+                newk = string(k)
+            elseif keytype === Symbol
+                newk = Symbol(string(k))
+            else
+                newk = k
+            end
+            out[newk] = ordereddictify(v; keytype=keytype)
         end
         return out
     # Arrays / vectors: map elements recursively and return a Vector{Any}
     elseif x isa AbstractArray
-        return [ordereddictify(element; stringkey=stringkey) for element in x]
+        return [ordereddictify(element; keytype=keytype) for element in x]
     # everything else: return as-is (primitives, numbers, strings, etc.)
     else
         return x
     end
 end
 
-#------------------------------------------------------------------------------------------------100
+#----------------------------------------------100---------------------------------------------
 
 """
     print time of cpu executtion at the line inwhich this macro is used
@@ -477,6 +515,32 @@ function randomChoiceOnTarget(target::AbstractVector, choiceList::AbstractVector
     return randomChoiceOnTarget.(target, 1, (choiceList,), (probability,))
 end 
 
+""" Compute the linearly weighted average of an array.
+The function assigns weights proportional to position indices (1, 2, 3, ...) to array
+elements and returns the weighted average.
+
+# Arguments
+- `a::Array`
+  Array of numeric values. Elements must support multiplication with numbers
+  and summation.
+
+# Return
+- The linearly weighted average as a floating-point number.
+
+# Formula
+For an array `a` with `n` elements, computes:
+```
+sum(i * a[i]) / sum(a)  for i = 1 to n
+```
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> a = [10, 20, 30]
+julia> linearly_weighted_avg(a)
+23.333333333333332
+```
+"""
 function linearly_weighted_avg(a::Array)
     total = 0.0
     for (i, v) in enumerate(a)
@@ -487,10 +551,34 @@ function linearly_weighted_avg(a::Array)
 end
 
 
-""" Convert String that is holded inside a variable to Symbol
+""" Convert a variable's value (String) into a Symbol.
-# Example
+The function takes a variable containing a String value and converts it to a Symbol
-x = "hello"     # x is a variable holding String "hello" \n
+using Julia's expression interpolation mechanism.
-y = variable_to_symbol(x)   # y holds :hello
+
+# Arguments
+- `variable`
+  Any variable whose value is a String. The function uses `string(variable)`
+  internally to obtain the value.
+
+# Return
+- A `Symbol` constructed from the string value of the input variable.
+
+# Notes
+- This function uses variable interpolation to capture the variable's
+  value as a Symbol. It works with any variable type that can be converted
+  to String.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> x = "hello"
+julia> variable_str_to_symbol(x)
+:hello
+
+julia> y = "world_test"
+julia> variable_str_to_symbol(y)
+:world_test
+```
 """
 function variable_str_to_symbol(variable)
     semi = :($variable)
@@ -534,6 +622,43 @@ function fieldname_useable_type(somestruct, fieldname::Symbol;
 end
 
 
+""" Draw unique elements from a list without replacement.
+The function randomly selects a specified number of distinct elements from a collection,
+optionally excluding certain elements from consideration. Uses in-place
+shuffling for efficiency.
+
+# Arguments
+- `drawOptions::Array`
+  Collection of elements to draw from.
+- `draw_number::Integer`
+  Number of unique elements to draw.
+
+# Keyword Arguments
+- `exclude_list::Union{AbstractArray,Nothing}=nothing`
+  Elements to exclude from the drawing pool. If `nothing`, no elements are
+  excluded.
+
+# Return
+- An array of `draw_number` unique elements drawn from `drawOptions`, excluding
+  any elements in `exclude_list`.
+
+# Notes
+- The function copies `drawOptions` and shuffles in-place, then pops elements
+  sequentially to ensure uniqueness.
+- Errors if `draw_number` exceeds the number of available elements after
+  exclusion.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> options = [1, 2, 3, 4, 5]
+julia> randomNoRepeat(options, 3)
+[3, 1, 5]
+
+julia> randomNoRepeat(options, 2; exclude_list=[1, 5])
+[4, 2]
+```
+"""
 function randomNoRepeat(drawOptions::Array, draw_number::Integer; 
                             exclude_list::Union{AbstractArray,Nothing}=nothing)
     draw_option = copy(drawOptions)
@@ -700,22 +825,46 @@ function selectRange(d::Dict{Symbol, <:AbstractVector}, range)
     return newDict
 end
 
-""" Assign value to a given Dict by array of keys
+""" Recursively traverses a nested dictionary structure using a vector of keys
+    and assigns a value to the final key. Creates intermediate dictionaries
+    if they don't exist.
 
-    # Example 
+# Arguments
-    d = Dict(
+- `dict::Dict`
-        :a1=> Dict(:c=> 5),
+  The root dictionary to traverse and modify.
-        :a2=> Dict(
+- `accessArray::Array{Symbol}`
-            :k=> 10,
+  A vector of symbols representing the key path to traverse.
-            :b=> Dict(
+- `valueToAssign`
-                :s=> "target",
+  The value to assign at the final key in the path.
-            )
-        )
-    )
-    index = [:a2, :b, :s] \n
-    assignDict!(d, [:a2, :b, :s], "wow")
 
-    return 1 if no target key in a given dict.
+# Return
+- `0` on success (value assigned)
+- `1` if the path cannot be traversed (missing intermediate keys)
+
+# Notes
+- The function walks through each key in `accessArray` except the last one,
+  expecting intermediate keys to already exist in the dictionary.
+- If any intermediate key is missing, the function returns `1` without
+  modifying the dictionary.
+- The final key in `accessArray` receives the `valueToAssign`.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> d = Dict(
+           :a1=> Dict(:c=> 5),
+           :a2=> Dict(
+               :k=> 10,
+               :b=> Dict(
+                   :s=> "target",
+               )
+           )
+       )
+julia> assignDict!(d, [:a2, :b, :s], "wow")
+0
+julia> d[:a2][:b][:s]
+"wow"
+```
 """
 function assignDict!(dict::Dict, accessArray::Array{Symbol}, valueToAssign)
     wd = nothing
@@ -736,9 +885,39 @@ function assignDict!(dict::Dict, accessArray::Array{Symbol}, valueToAssign)
     end
 end
 
-""" convert hour(0-23), minute(0-59) into julia time object
+""" Converts hour (0-23) and minute (0-59) into a Julia `Time` object using
-# Example
+12-hour format with AM/PM indicator.
-    time
+
+# Arguments
+- `h::Integer`
+  Hour in 24-hour format (0 to 23).
+- `m::Integer`
+  Minute (0 to 59).
+
+# Return
+- A `Time` object representing the time in 12-hour format with AM/PM.
+
+# Notes
+- Hours 0 and 12 are special cases: 0 becomes 12 AM, 12 becomes 12 PM.
+- Hours 1-11 remain the same with "am" suffix.
+- Hours 13-23 are converted to 1-11 with "pm" suffix.
+- Minutes less than 10 are zero-padded.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> iTime(0, 30)
+12:30 AM
+
+julia> iTime(9, 15)
+9:15 AM
+
+julia> iTime(12, 0)
+12:00 PM
+
+julia> iTime(14, 5)
+2:05 PM
+```
 """
 function iTime(h::Integer, m::Integer)
     if h == 0
@@ -782,19 +961,37 @@ function limitvalue(v::Number, lowerbound::Pair, upperbound::Pair)
 end
 
 
-""" Assign matrix b to matrix a according to matrix b's CartesianIndex.
+""" Assigns elements from matrix `b` to matrix `a` using the Cartesian indices
+of `b`. Elements are copied in the order they appear when iterating over `b`,
+and placed into `a` at the corresponding Cartesian positions of `b`.
 
-  Arguments:\n
+# Arguments
-    a : target matrix.
+- `a`
-    b : source matrix. 
+  Target matrix where values from `b` will be assigned.
+- `b`
+  Source matrix whose Cartesian indices determine where values are placed in `a`.
 
-  Return:\n
+# Return
-    Resulting matrix a.
+- `nothing`
 
-  Example:\n
+# Notes
-  ```jldoctest
+- The function iterates through `b` in column-major order (Julia's default),
-  julia> not done yet
+  retrieving each element's Cartesian index and assigning it to the same
-  ```
+  position in `a`.
+- Matrix `a` must have sufficient size to accommodate all Cartesian indices
+  from `b`; otherwise, an `BoundsError` may occur.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> a = zeros(4, 4);
+julia> b = [1 2; 3 4];
+julia> cartesianAssign!(a, b);
+julia> a[1:2, 1:2]
+2×2 Matrix{Float64}:
+ 1.0  3.0
+ 2.0  4.0
+```
 """
 function cartesianAssign!(a, b)
     for (i, v) in enumerate(b)
@@ -1149,7 +1346,6 @@ julia> text = "{\"ask\": {\"text\": \"Could you please tell me about the special
 julia> GeneralUtils.getStringBetweenCharacters(text, '{', '}', endCharLocation="end")
 "{\"ask\": {\"text\": \"Could you please tell me about the special event?\"\n}}"
 ```
-# Signature
 """
 function getStringBetweenCharacters(text::T, startChar::Char, endChar::Char;
           endCharLocation::String="next", includeChar::Bool=true)::String where {T<:AbstractString}
@@ -1181,59 +1377,40 @@ function getStringBetweenCharacters(text::T, startChar::Char, endChar::Char;
 end
 
 
-
+""" Recursively creates nested dictionary paths if they do not exist and assigns
-""" Read JSON string and return a dictionary with string key. (JSON3 defaults to symbol key)
+a value to the final key. Similar to `mkpath()` but for dictionaries.
-  This function solve the problem of reading JSON with string key. 
-
-  Arguments:
-    jsonString::String
-
-  Return:
-  a dictionary with string key
-
-  Example:
-  ```jldoctest
-  julia> jsonString = {\"wine type\": \"Red\", \"intensity level\": \"medium-bodied\"}
-  julia> JSON3read_stringKey(jsonString)
-  Dict{String, Any} with 2 entries:
-  "intensity level" => "medium-bodied"
-  "wine type"       => "Red"
-  ```
-"""
-function JSON3read_stringKey(jsonString::AbstractString)
-  jsonobj = JSON3.read(jsonString)
-  newDict = OrderedDict{String,Any}()
-  for (k,v) in jsonobj
-    newDict[string(k)] = v
-  end
-  return newDict
-end
-
-
-""" Create nested dict path if it does not already exist. The same concept as Julia's mkpath()
 
 # Arguments
-  - `dict::Dict`
+- `dict::Union{Dict{Symbol, Any}, Dict{String, Any}}`
-    target dict
+  The target dictionary to traverse and modify. Must use consistent key types
-  - `addkeys::Union{Vector{String}, Vector{Symbol}}`
+  (either all `String` or all `Symbol`).
-    keys to be added to dict
+- `addkeys::Union{Vector{String}, Vector{Symbol}}`
-  - `value`
+  A vector of keys representing the path to traverse. Intermediate dictionaries
-    value to be added to dict at final key in keypath
+  are created if they don't exist.
+- `value`
+  The value to assign at the final key in the path.
 
 # Return
-  - dict with added keypath
+- The assigned `value`.
 
-# Example
+# Notes
+- The function ensures key type consistency: the type of keys being added must
+  match the type of existing keys in the dictionary.
+- Intermediate dictionaries are automatically created with the appropriate key
+  type when they don't exist.
+- The function walks through each key in `addkeys` except the last one,
+  creating intermediate dictionaries as needed, and assigns `value` to the final
+  key.
+
+# Examples
 ```jldoctest
-julia> using Revise
 julia> using GeneralUtils
-julia> d = Dict{String, Any}("a" => Dict{String, Any}("b" => 10))
+julia> d = Dict("a" => Dict("b" => 10))
-julia> GeneralUtils.mkDictPath!(d, ["a", "v", "x", "y", "z"], 42)
+julia> mkDictPath!(d, ["a", "v", "x", "y", "z"], 42)
-Dict{String, Any} with 1 entry:
+42
-"path" => Dict{Any, Any}("to"=>Dict{Any, Any}("nested"=>Dict{Any, Any}("value"=>42)))
+julia> d["a"]["v"]["x"]["y"]["z"]
+42
 ```
-
-# Signature
 """
 function mkDictPath!(dict::Union{Dict{Symbol, Any}, Dict{String, Any}}, 
       addkeys::Union{Vector{String}, Vector{Symbol}}, value)
@@ -1257,27 +1434,33 @@ function mkDictPath!(dict::Union{Dict{Symbol, Any}, Dict{String, Any}},
 end
 
 
-""" Get nested dict value using a vector of keys
+""" Retrieves a value from a nested dictionary by traversing a vector of keys.
+Creates intermediate dictionaries if they don't exist.
 
 # Arguments
-  - `dict::Dict`
+- `dict::Dict`
-    target dict
+  The root dictionary to traverse.
-  - `keys::Vector`
+- `keys::Vector`
-    keys vector
+  A vector of keys representing the path to traverse. Each key in the vector
+  is used to access the next level of nesting.
 
 # Return
-  - dict with added keypath
+- The value at the final key in the path.
 
-# Example
+# Notes
+- Errors with `ArgumentError` if any intermediate key is missing from the
+  dictionary path.
+- The function walks through each key in `keys` except the last one,
+  expecting intermediate keys to exist in the dictionary.
+- The final key in `keys` is used to retrieve the value.
+
+# Examples
 ```jldoctest
-julia> using Revise
 julia> using GeneralUtils
-julia> d = Dict{Symbol, Any}(:a => Dict{Symbol, Any}(:b => 10))
+julia> d = Dict(:a => Dict(:b => 10))
-julia> GeneralUtils.getDictPath(d, [:a, :b])
+julia> getDictPath(d, [:a, :b])
 10
 ```
-
-# Signature
 """
 function getDictPath(dict::Dict, keys::Vector)
   current_dict = dict
@@ -1429,8 +1612,6 @@ OrderedCollections.OrderedDict{Any, Any}(:thought => "what to do",
                                         :plan => "wake up and going out", 
                                         :action => "1. wake up 2. eat 3. sleep")
 ```
-
-# Signature
 """
 function textToDict(text::String, detectKeywords::Vector{String}; 
     dictKey::Union{Vector{String}, Nothing}=nothing, 
@@ -1491,6 +1672,82 @@ function textToDict(text::String, detectKeywords::Vector{String};
   return od2
 end
 
+""" Recursively convert dictionary into an HTML string representation.
+The function walks a nested `AbstractDict` structure and produces a well-formed HTML string
+where each dictionary key becomes an HTML tag. Nested dictionaries become
+nested tags, and scalar values (numbers, strings, etc.) become the text
+content of leaf tags.
+
+# Arguments
+- `d::AbstractDict`
+  The dictionary to convert. Keys must be strings or symbols that form valid
+  HTML tag names.
+
+# Keyword Arguments
+- `indent_level::Integer=1`
+  Initial indentation level for the output. Each recursive level increases
+  indentation by one.
+- `indent_str::String=" "`
+  String used for each indentation level.
+
+# Return
+- A single HTML string representing the dictionary structure, with proper
+  opening and closing tags and appropriate indentation.
+
+# Notes
+- Keys are sorted alphabetically for deterministic output.
+- Works recursively: dictionary values produce nested tags; non-dictionary
+  values are placed as text between opening/closing tags.
+
+# Examples
+```jldoctest
+julia> d = Dict(
+           "html" => Dict(
+               "head" => Dict("title" => "Test"),
+               "body" => Dict(
+                   "h1" => "Hello",
+                   "p" => "World"
+               )
+           )
+       );
+
+julia> println(dict_to_string_html(d))
+ <html>
+  <head>
+   <title>Test</title>
+  </head>
+  <body>
+   <h1>Hello</h1>
+   <p>World</p>
+  </body>
+ </html>
+```
+"""
+function dict_to_string_html(d::AbstractDict; indent_level=1, indent_str=" ")
+  lines = String[]
+  padding = indent_str ^ indent_level
+  
+  for k in keys(d)
+      v = d[k]
+      
+      if v isa AbstractDict
+          # Open tag, recurse for children, then close tag
+          push!(lines, "$padding<$k>")
+          ind_level = indent_level + 1
+          push!(lines, dict_to_string_html(v; indent_level=ind_level, indent_str=indent_str))
+          push!(lines, "$padding</$k>")
+      else
+          # Leaf node: put key and value on a single line
+          push!(lines, "$padding<$k>$v</$k>")
+      end
+  end
+  return join(lines, "\n")
+end
+
+
+
+
+
 
 
 

src/util.jl

@@ -5,7 +5,7 @@ export timedifference, showstracktrace, findHighestIndexKey, uuid4snakecase, rep
         dataframeToCSV, dfToVectorDict, disintegrate_vectorDict, getDataFrameValue, dfRowtoString, 
         dfToString, dataframe_to_json_list, dictToString, dictToString_noKey, issomething,
         dictToString_numbering, extract_triple_backtick_text, 
-        countGivenWords, remove_french_accents, 
+        countGivenWords, remove_french_accents, removestring,
         extractTextBetweenCharacter, extractTextBetweenString, 
         convertCamelSnakeKebabCase, fitrange, recentElementsIndex, nonRecentElementsIndex
 
@@ -13,31 +13,34 @@ using JSON, DataStructures, Distributions, Random, Dates, UUIDs, DataFrames
 
 # ---------------------------------------------- 100 --------------------------------------------- #
 
-""" Compute time different between start time and stop time in a given unit. 
+""" Computes the time difference between two `DateTime` values and returns the
- Unit can be "milliseconds", "seconds", "minutes", "hours".
+result in a specified unit: milliseconds, seconds, minutes, or hours.
 
 # Arguments
-  - `starttime::DateTime` 
+- `starttime::DateTime`
-    start time
+  The starting `DateTime` value.
-  - `stoptime::DateTime`  
+- `stoptime::DateTime`
-    stop time
+  The ending `DateTime` value.
-  - `unit::String`  
+- `unit::String`
-    unit of time difference
+  The unit for the result. Must be one of: `"milliseconds"`, `"seconds"`,
+  `"minutes"`, `"hours"`.
 
 # Return
-  - time difference in given unit
+- `Integer`: The time difference converted to the specified unit.
 
-# Example
+# Notes
+- The function computes `stoptime - starttime` and converts the result to the
+  requested unit using integer division.
+- Errors with `ArgumentError` if an invalid unit is specified.
+
+# Examples
 ```jldoctest
-julia> using Revise
 julia> using GeneralUtils, Dates
 julia> a = Dates.now()
-julia> b = a + Dates.Day(5) # add 5 days
+julia> b = a + Dates.Day(5)
-julia> GeneralUtils.timedifference(a, b, "hours")
+julia> timedifference(a, b, "hours")
 120
 ```
-
-# Signature
 """
 function timedifference(starttime::DateTime, stoptime::DateTime, unit::String)::Integer
   diff = stoptime - starttime
@@ -184,21 +187,27 @@ end
 
 
 
-""" Get uuid4 with snake case
+""" Generates a UUID4 (version 4) identifier and converts it to snake case by
+replacing hyphens with underscores.
+
+# Arguments
+- This function takes no arguments.
 
 # Return
-  - `uuid4::String`
+- `String`: A UUID4 string with underscores instead of hyphens (e.g.,
-    uuid4 with snake case
+  `"0f6e4f_568c_4df4_8c79_1d7a58072f4a"`).
 
-# Example
+# Notes
+- Uses the `uuid4()` function from the UUIDs standard library to generate a
+  random UUID.
+- The underscore character replaces all hyphens in the UUID string.
+
+# Examples
 ```jldoctest
-julia> using Revise
 julia> using GeneralUtils
-julia> GeneralUtils.uuid4snakecase()
+julia> uuid4snakecase()
 "0f6e4f_568c_4df4_8c79_1d7a58072f4a"
 ```
-
-# Signature
 """
 function uuid4snakecase()::String
   _id = string(uuid4())
@@ -207,32 +216,37 @@ function uuid4snakecase()::String
 end
 
 
-""" Replace a dictionary key with the new key
+""" Replaces keys in a dictionary according to a mapping, returning a new
+dictionary with updated keys while preserving the original values.
 
 # Arguments
-  - `d::Dict` 
+- `d::Dict`
-    The input dictionary that you want to modify
+  The input dictionary to modify.
-  - `replacementMap::Dict`
+- `replacementMap::Dict`
-    A dictionary that maps old keys to new keys
+  A dictionary mapping old keys to new keys. Keys not present in this map are
+  left unchanged.
 
 # Return
-  - `newDict::Dict`
+- `Dict`: A new dictionary with replaced keys. Values are preserved from the
-    new dictionary with the replaced keys
+  original dictionary.
 
-# Example
+# Notes
+- The function creates a new dictionary rather than modifying the input in
+  place.
+- Keys not found in `replacementMap` are copied to the result with their
+  original keys unchanged.
+
+# Examples
 ```jldoctest
-julia> using Revise
 julia> using GeneralUtils
 julia> d = Dict(:a => 1, :b => 2, :c => 3)
 julia> replacement_map = Dict(:a => :x, :b => :y)
-julia> new_dict = GeneralUtils.replaceDictKeys(d, replacement_map)
+julia> replaceDictKeys(d, replacement_map)
 Dict{Any, Any} with 3 entries:
   :y => 2
   :c => 3
   :x => 1
 ```
-
-# Signature
 """
 function replaceDictKeys(d::Dict, replacementMap::Dict)::Dict
   newDict = Dict()
@@ -294,36 +308,43 @@ end
 
 
 
-""" Execute a function with timer.
+""" Executes a function with a timeout mechanism. If the function does not
+complete within the specified time, it is interrupted and a timeout message
+is returned.
 
 # Arguments
-  - `f::Function`
+- `f::Function`
-      a function to run
+  The function to execute.
-  - `timeoutwindow::Integer``
+- `timeoutwindow::Integer`
-      timeout in seconds
+  The timeout duration in seconds.
 
-# Keyword Argument
+# Keyword Arguments
-  - `fargs`
+- `fargs`
-    arguments for the function
+  Arguments to pass to the function `f`. If `nothing`, the function is called
-  - `timeoutmsg::String`
+  without arguments.
-    time out message
+- `timeoutmsg::String`
+  The message to return if the function times out. Defaults to `"task timed out"`.
 
 # Return
-  - task result otherwise timeout message
+- The result of the function if it completes within the timeout, otherwise the
+  `timeoutmsg` string.
 
-# Example
+# Notes
-  ```jldoctest
+- Uses Julia's `@task`, `schedule`, and `Timer` to implement non-blocking
+  execution with interruption via `Base.throwto`.
+- Errors with `InterruptException` if the function exceeds the timeout.
+
+# Examples
+```jldoctest
 julia> function testfunc(x)
-          sleep(x)
+           sleep(x)
-          return "task done"
+           return "task done"
-        end
+       end
 julia> result = timeout(testfunc, 10; fargs=20)
 "task timed out"
 julia> result = timeout(testfunc, 20; fargs=10)
 "task done"
 ```
-
-#  Signature
 """
 function timeout(f::Function, timeoutwindow::Integer; fargs=nothing, timeoutmsg="task timed out")
   tsk = @task f(fargs)
@@ -340,23 +361,26 @@ end
 
 
 
-""" Convert a dataframe into CSV.
+""" Converts a DataFrame to a CSV string representation using the CSV.jl package.
 
 # Arguments
-  - `df::DataFrame`
+- `df::DataFrame`
-    A connection object to Postgres database
+  The DataFrame to convert to CSV format.
 
 # Return
-  - `result::String`
+- `String`: The DataFrame contents as a CSV-formatted string.
 
-# Example
+# Notes
+- Uses `CSV.write` with an `IOBuffer` to capture the output as a string.
+- The returned string contains the full CSV representation including headers.
+
+# Examples
 ```jldoctest
 julia> using DataFrames, GeneralUtils
 julia> df = DataFrame(A=1:3, B=5:7, fixed=1)
-julia> result = GeneralUtils.dataframeToCSV(df)
+julia> dataframeToCSV(df)
+"1,5,1\n2,6,1\n3,7,1\n"
 ```
-
-# Signature
 """
 function dataframeToCSV(df::DataFrame)
   # Create an IOBuffer to capture the output
@@ -426,8 +450,6 @@ end
   3 => [Dict("a"=>7), Dict("a"=>8), Dict("a"=>9)]
   4 => [Dict("a"=>10)]
   ```
-
-# Signature
 """
 function disintegrate_vectorDict(data::Vector, partsize::Integer
   )
@@ -473,8 +495,6 @@ end
   julia> getDataFrameValue(df[1, :], :name)
   "Alice"
   ```
-
-# Signature
 """
 getDataFrameValue(row::DataFrameRow, key::Symbol) = row.:($key)
 
@@ -543,8 +563,6 @@ end
   julia> dfToString(df)
   "1) name: Alice, age: 25\n2) name: Bob, age: 30"
   ```
-
-# Signature
 """
 function dfToString(df::DataFrame)
   dfstr = ""
@@ -583,8 +601,6 @@ end
   "{\"name\":\"Alice\",\"age\":25}"
   "{\"name\":\"Bob\",\"age\":30}"
   ```
-
-# Signature
 """
 function dataframe_to_json_list(df::DataFrame)::Vector{String}
   json_list = []
@@ -618,8 +634,6 @@ end
   julia> dict_to_string(od)
   "1) name: Alice, 2) age: 25"
   ```
-
-# Signature
 """
 function dictToString(od::T) where {T<:AbstractDict}
   items = []
@@ -733,27 +747,39 @@ end
 
 
 
-"""
+""" Remove French accents from the given text.
-    remove_french_accents(text::String) -> String
 
-Remove French accents from the given text.
+The function replaces accented French characters with their non-accented
+counterparts using a dictionary mapping. Supported accented characters
+include: à, â, ä, á, é, è, ê, ë, î, ï, í, ñ, ô, ö, ò, ó, ù, û, ü, ÿ, ç,
+and their uppercase variants. The apostrophe character `’` is removed
+completely.
 
 # Arguments
-- `text::String` The input string containing French accents.
+- `text::AbstractString`
+  The input string containing French accented characters.
 
-# Returns
+# Return
-- `String` The input string with all French accents removed.
+- `AbstractString`: A new string with all French accents replaced by their
+  non-accented equivalents.
+
+# Notes
+- The function creates a character list and replaces each accented character
+  according to an internal dictionary mapping.
+- Does **not** mutate the input; it allocates a new string.
 
 # Examples
-  ```jldoctest
+```jldoctest
-  julia> remove_french_accents("Café")
+julia> using GeneralUtils
-  "Cafe"
+julia> remove_french_accents("Café")
+"Cafe"
 
-  julia> remove_french_accents("L'été est beau.")
+julia> remove_french_accents("L'été est beau.")
-  "L'ete est beau."
+"L'ete est beau."
-  ```
 
-# Signature
+julia> remove_french_accents("Noël, naïve, François")
+"Noel, naive, Francois"
+```
 """
 function remove_french_accents(text::AbstractString)::AbstractString
   textcharlist = [i for i in text]
@@ -1113,9 +1139,38 @@ function nonRecentElementsIndex(vectorlength::Integer, n::Integer)
   return 1:(vectorlength-n)
 end
 
+""" Remove specified substrings from text.
 
+Removes all occurrences of each string in `removelist` from the input text
+by repeatedly replacing them with empty strings until none remain.
 
+# Arguments
+- `text::String`
+  The input string to modify.
+- `removelist::Vector{String}`
+  A vector of substrings to remove from the text.
 
+# Return
+- `String`: The text with all specified substrings removed.
+
+# Examples
+```jldoctest
+julia> using GeneralUtils
+julia> removestring("hello world", ["l", " "])
+"heoword"
+julia> removestring("foo bar baz", ["bar", " "])
+"foobaz"
+```
+"""
+function removestring(text::String, removelist::Vector{String})::String
+  for i in removelist
+    while occursin(i, text)
+      text = replace(text, i => "")
+    end
+  end
+
+  return string(text)
+end