I think I found another way (looking at the source):
length(mytupletype.parameters)
Is this something I can rely on, or some internal API that may change?
Also, would it make sense to define the whole abstract array interface
for Tuple types, eg
size(t::Type{Tuple}) = (length(t.parameters),)
getindex(t::Type{Tuple}, index::Int) = t.parameters[index]
etc
in Base, or am I abusing Tuple types here?
Best,
Tamas
On Wed, Mar 23 2016, Tamas Papp wrote:
> Hi,
>
> How do I get the length of a tuple _type_? In other words, is there a
> standard idiom for
>
> foo{N}(::Type{NTuple{N}}) = N
>
> Best,
>
> Tamas
