update

test/test_2.jl

@@ -0,0 +1,23 @@
+using Revise
+
+function testf(a)::NamedTuple{(:a, :b), Tuple{Union{Nothing, Int}, Int}}
+  if a == 1
+    return (a=nothing, b=5)
+  else
+    return (a=5, b=5)
+  end
+end
+
+
+q = testf(1)
+w = testf(2)
+
+
+
+
+
+
+
+
+
+