That's inconsistent with the documentation :(
help?> method_exists
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.. method_exists(f, Tuple type) -> Bool
Determine whether the given generic function has a method matching the
given :obj:`Tuple` of argument types.
.. doctest::
julia> method_exists(length, Tuple{Array})
true
julia>
On Wednesday, September 16, 2015 at 1:22:36 PM UTC-4, Simon Danisch wrote:
>
> you're passing types to next, and it points out correctly: no method
> matching next(::*Type*{Number}, ::*Type*{Any})
> method_exist on the other hands takes types as its arguments so your query
> should look like this:
> *method_exists( next, Tuple{DataType, DataType } )* or *method_exists(
> next, Tuple{ Type{Number}, Type{Any} } )*
> which correctly returns false.
>
> Am Mittwoch, 16. September 2015 19:16:50 UTC+2 schrieb Michael Francis:
>>
>> I was executing the following on 0.4
>>
>> julia> next( Number, Any )
>> ERROR: MethodError: `next` has no method matching next(::Type{Number},
>> ::Type{Any})
>> Closest candidates are:
>> next(::SimpleVector, ::Any)
>> next{T}(::StepRange{T,S}, ::Any)
>> next{T}(::UnitRange{T}, ::Any)
>> ...
>>
>> julia> method_exists( next, Tuple{ Number, Any } )
>> true
>>
>> This seems incorrect?
>>
>
