This doesn't work:
dispatchtest{T}(x::Vararg{Union{T,Array{T,1}}}) = "success"
dispatchtest([1,2],3)
results in
LoadError: MethodError: `dispatchtest` has no method matching
dispatchtest(::Array{Int64,1}, ::Int64)
Closest candidates are:
dispatchtest{T}(!Matched::Union{Array{T,1},T}...)
while loading In[8], in expression starting on line 1
On Tuesday, October 20, 2015 at 1:19:24 PM UTC+2, Kristoffer Carlsson wrote:
>
> Try: Base.vcat{T}(x::Vararg{Union{T,Array{T,1}}}) = mixed_vcat(x...)
>
> On Tuesday, October 20, 2015 at 11:44:15 AM UTC+2, Andras Niedermayer
> wrote:
>>
>> I've written an implementation of vcat for the special case of mixed
>> scalar-vector parameters (e.g. vcat(1,[2,3],4)) using generated functions.
>> I get a speed increase of a factor 70 and memory usage reduction by a
>> factor 10. It also makes this special case of vcat type stable (e.g. the
>> inferred type is Array{Int64,1} rather than Any for vcat(1,[2,3],4)). See
>> https://gist.github.com/afniedermayer/947faadd362778d088d7
>>
>> I'd like to make a pull request (or at least provide a package that
>> overloads vcat to start with), but I haven't figured out how to dispatch on
>> mixed scalar-vector parameters.
>> Base.vcat{T}(x::Union{T,Array{T,1}}...) = mixed_vcat(x...)
>>
>>
>> doesn't work, see
>> https://groups.google.com/forum/#!topic/julia-users/NCfxu7_9VR0
>>
>> Is there a way to dispatch on mixed scalar-vector parameters (besides
>> dispatching in the generated function)?
>>
>
