On Thursday, 23 November 2023 at 16:33:52 UTC, DLearner wrote:
Code below is intended to test simple mixin with lambda
function under -betterC.
Works with full-D, but fails with 'needs GC' errors under
-betterC.
Why is this so, bearing in mind the concatenations are executed
at
compile, not run, time?
This is a known limitation:
https://issues.dlang.org/show_bug.cgi?id=23637
The easiest way to work around it is to change `mxnTest` from a
function to a templated manifest constant:
```d
enum mxnTest(string strVar1, string strVar2) =
`(int Var1, int Var2) {
if (Var1 > Var2) {
return true;
} else {
return false;
}
}(` ~ strVar1 ~ `,` ~ strVar2 ~ `)`;
```
Keep in mind that you will also have to change the call site to
pass `"Var_A"` and `"Var_B"` as template arguments:
```d
// Note the ! in front of the argument list
FirstVarGreater = mixin(mxnTest!("Var_A", "Var_B"));
```
