Indeed
*julia> **getindex(Any, (1,2,3))*
*1-element Array{Any,1}:*
* (1,2,3)*
Basically, any code with X[y...] gets lowered to getindex, and then the
corresponding method takes over to do the right thing. Makes the lowering
relatively simple, i imagine.
On Wednesday, 17 June 2015 13:54:11 UTC+1, Mauro wrote:
>
> I think it just uses getindex (a bit of a hack...):
>
> julia> @which Int[3]
> getindex(T::Union(DataType,UnionType,TypeConstructor),vals...) at
> array.jl:119
>
>
> On Wed, 2015-06-17 at 14:50, andrew cooke <and...@acooke.org <javascript:>>
> wrote:
> > Oh, I think the call() thing is just me being confused. That's *only* a
> > mechanism to allow non-functions to look like functions? I guess my
> > misunderstanding is more about how apply is defined (it mentions call),
> > which really isn't important to me right now, so feel free to ignore
> that
> > part of my question. Sorry.
> >
> >
> > On Wednesday, 17 June 2015 09:45:46 UTC-3, andrew cooke wrote:
> >>
> >>
> >> If I want to pass the function that constructs an array of Any, given
> some
> >> values, to another function, what do I use?
> >>
> >> Here's an example that might make things clearer:
> >>
> >> julia> f(x...) = Any[x...]
> >> f (generic function with 1 method)
> >>
> >> julia> apply(f, 1,2,3)
> >> 3-element Array{Any,1}:
> >> 1
> >> 2
> >> 3
> >>
> >> julia> apply(Any[], 1,2,3)
> >> ERROR: MethodError: `call` has no method matching call(::Array{Any,1},
> ::
> >> Int64, ::Int64, ::Int64)
> >> Closest candidates are:
> >> BoundsError(::Any...)
> >> TypeVar(::Any...)
> >> TypeConstructor(::Any...)
> >> ...
> >> in apply at deprecated.jl:116
> >>
> >> where I am looking for what the built-in equivalent of f() is.
> >>
> >> I may be even more confused, because I also don't understand why this
> >> fails:
> >>
> >> julia> call(f, 1, 2)
> >> ERROR: MethodError: `call` has no method matching call(::Function,
> ::Int64
> >> , ::Int64)
> >> Closest candidates are:
> >> BoundsError(::Any...)
> >> TypeVar(::Any...)
> >> TypeConstructor(::Any...)
> >> ...
> >>
> >> So any guidance appreciated.
> >>
> >> Thanks,
> >> Andrew
> >>
>
>
