Example for multi level template composition
ag0aep6g
anonymous at example.com
Mon Oct 10 11:47:41 UTC 2022
On Monday, 10 October 2022 at 06:30:05 UTC, Arun wrote:
> Stumbled upon this question on HN
> https://news.ycombinator.com/item?id=33142751#33147401
>
>> Can I write template A and then apply it to itself to get
>> template B and then apply that onto template C to get template
>> D.
>
> Does anyone have an example for this?
You can just write that down in code:
```d
template D() { enum D = "It's me, template D!"; }
template A(alias MyA)
{
template A(alias MyC)
{
alias A = D;
}
}
template C() {}
alias B = A!A;
alias MaybeD = B!C;
pragma(msg, MaybeD!()); /* prints "It's me, template D!" */
```
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