Re: Create module-level function using mixin template?

[Ali Çehreli via Digitalmars-d-learn]

On 4/25/25 10:24 AM, Andy Valencia wrote:
On Friday, 25 April 2025 at 16:59:16 UTC, monkyyy wrote:
its extremely unclear what your trying to do my best geuss:

I want to use a mixin template to generate a top-level function. Like, 
is there a variant of the following which makes a function named "foo1" 
available?

Andy

```d
mixin template Foo(alias fn) {
     int fn() { return 1; }
}

mixin Foo!foo1;

void main() {
     import std.stdio : writeln;

     writeln(foo1());
}
```

I think an 'alias' template parameter must refer to an existing symbol, 
which you don't have. Although I've been missing a feature of "string 
parameters without quotes", here is a solution:

mixin template Foo(string fn, int i) {
    int Foo() { return i; }

    mixin ("alias " ~ fn ~ " = Foo;");
}

mixin Foo!("foo1", 1);
mixin Foo!("foo2", 2);

void main() {
    import std.stdio : writeln;

    writeln(foo1());
    writeln(foo2());
}

Ali