Real naive template question

Nicholas Wilson via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Sun Aug 13 18:11:06 PDT 2017


On Monday, 14 August 2017 at 00:44:05 UTC, WhatMeForget wrote:
> module block_template;
>
> void main()
> {
>     template BluePrint(T, U)
>     {
>         T integer;
>         U floatingPoint;
>     }
>
>     BluePrint!(int, float);
> }
>
> // DMD returns
> // template.d(13): Error: BluePrint!(int, float) has no effect
>
> // I was expecting something like the following to be created 
> after compilation:
>
> module block_template;
>
> void main()
> {
>     {
>         int integer;
>         float floatingPoint;
>     }
> }
>
>
> I realize this is a corner case, but shouldn't the 
> BluePrint!(int, float); statement blindly create a block of 
> code?

you want https://dlang.org/spec/template-mixin.html


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