On Wednesday, 17 August 2016 at 08:37:32 UTC, Lodovico Giaretta wrote:
On Tuesday, 16 August 2016 at 23:18:28 UTC, Adam D. Ruppe wrote:
On Tuesday, 16 August 2016 at 19:17:27 UTC, Engine Machine wrote:
alias x = AliasSeq!(a, b, AliasSeq!(c, d));

results in a flat sequence. I would like to be able to keep them separate so I can have sub sequences.

wrap them in a struct.

You mean something like:

struct MySequence(Args...)
{
    enum length = Args.length;
    alias args = Args;
}

alias x = MySequence!(a, b, MySequence!(c, d));

static assert(x.length == 3)
static assert(x.args[2].length == 2);

Thanks, basically works.

How can I test, though, if a argument uses a MySequence? I can't do if (Args[0] == MySequence) because MySequence is templated. While I could test for a length, that doesn't work because some types have a length. I could add another enum to MySequence, but again, not safe.

I could do some string tests, but that doesn't work.

in your exmaple,

if (x.args[2] == MySequence) ??

I simply need to differentiate between a parameter/arg being a MySequence and not.



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