refractoring

src/snn_utils.jl

@@ -260,7 +260,7 @@ end
     one may use bias = -5 to transform synaptic strength into range -5 to 5
     the return value is shifted back to original scale
 """
-function synapticConnStrength(currentStrength::AbstractFloat, updown::String, bias::Number=0)
+function synapticConnStrength(currentStrength::AbstractFloat, updown::String, bias::Number=0)::Float64
     currentStrength += bias
     if currentStrength > 0
         Δstrength = (1.0 - sigmoid(currentStrength))
@@ -274,7 +274,7 @@ function synapticConnStrength(currentStrength::AbstractFloat, updown::String, bi
         updatedStrength = currentStrength - Δstrength
     end
     updatedStrength -= bias
-    return updatedStrength
+    return updatedStrength 
 end
 
 """ Compute all synaptic connection strength of a neuron. Also mark n.wRec to 0 if wRec goes