Struct field name validate

General Usage
1

Hellow!

I am looking for a reliable method to validate structure field names. Structure code is generated based on user input.

I think about eval(), but…

x = :else
exp = :($x = "Oops!"; print($x))
eval(exp)  # -> Oops!

then i tried using Base.isidentifier(), but

Base.isidentifier(:else) # -> thue

this is not what i need.

If i will checking against a list of registered names, i will need a supporting this list.

May be…

try
    include("generated_field_name_test.jl")
catch e
    # ...
end
2 
julia> struct A     
         field_a    
       end          
                    
julia> fieldnames(A)
(:field_a,)

Though I’d recommend checking the field names before creating the struct.

3

There is also the function hasfield, although I’m not entirely confident from your example code that that’s what you’re looking for: hasfield(Complex{Float64}, :re).