Re: [julia-users] Macro expansion for ccall with tuple argument

[Yichao Yu]

> and I programmed it as
> julia> macro do_ccall(f,args...)
> :(ccall(f,Int,$(ntuple(i->Int,length(args))),args...)) end

I belive the arguments should be a tuple expression which you can
generate with Expr(:tuple, [Int for i in 1:length(args)]...)

> julia> macroexpand(:(@do_ccall(f,1,2,3)))
> :(ccall(f,Int,(Int64,Int64,Int64),args...))
>

In general you can use `Meta.show_sexpr` (or `dump`/`xdump`) to see
more precisely what the expression is.