Why can't we allow mixin templates to contain statements, as is the case
for regular mixins?
Is there a workaround?

here's a dummy example:

template mixin Foo{
 //some statement, eg: 'return;'
}

void fun(){
  mixin Foo;
}

Note that I can do this with a regular mixin, but template mixins are cleaner (esp in more complex examples).

On Sunday, 15 March 2015 at 01:20:55 UTC, Timothee Cour wrote:
> Why can't we allow mixin templates to contain statements, as is the case
> for regular mixins?
> Is there a workaround?
>
> here's a dummy example:
>
> template mixin Foo{
>  //some statement, eg: 'return;'
> }
>
> void fun(){
>   mixin Foo;
> }
>
> Note that I can do this with a regular mixin, but template mixins are
> cleaner (esp in more complex examples).

Wouldn't the most basic explanation be that templates cannot contain statements, therefore mixin templates can't either?

On Sat, 14 Mar 2015 18:20:47 -0700, Timothee Cour via Digitalmars-d-learn wrote:

> Why can't we allow mixin templates to contain statements, as is the case
> for regular mixins?
> Is there a workaround?
> 
> here's a dummy example:
> 
> template mixin Foo{
>  //some statement, eg: 'return;'
> }
> 
> void fun(){
>   mixin Foo;
> }
> 
> Note that I can do this with a regular mixin, but template mixins are cleaner (esp in more complex examples).

template Foo(int a, string b) {
  import std.format : format;
  enum Foo = q{
    {
      import std.conv : to;
      return %2$s+to!string(%1$s);
    }
  }.format(a, b.stringof);
}

positional args, syntax highlighting, usage like `mixin(Foo!(42, "z"));`.
maybe this will help.

On Sun, 15 Mar 2015 13:28:33 +0000, ketmar wrote:

> template Foo(int a, string b) {
>   import std.format : format;
>   enum Foo = q{
>     {
>       import std.conv : to; return %2$s+to!string(%1$s);
>     }
>   }.format(a, b.stringof);
> }
> 
> positional args, syntax highlighting, usage like `mixin(Foo!(42,
> "z"));`.
> maybe this will help.

ah, that `+`... ;-)