Get function signatures

user_5875950 0
Viewed 630

Is there a way to get a function's signatures at run time? I'd like to check the signature before calling that function. Something like:

exp = @sig func
if "kw" ∈ string(exp)
  func(kw=value)
end
julia
2 Answers

As stated in my comment, I think you're looking for methods(func).

user_25400370

In Julia 1.1 The signature can be obtained in the following way:

julia> function test(a::Integer, b::Integer, c::Integer)
       end
test (generic function with 2 methods)
julia> function extractSig(x) methods(x).ms[1].sig end
julia> extractSig(test)
Tuple{typeof(test),Integer,Integer,Integer}

If the symbols for the signature is needed the following base function suffices in Julia 1.1 that is 

Base.method_argnames(methods(x).ms[1])

It is worth noting that the code above only consider the first definition of the function. There might be more overloaded definitions

user_38531750
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