On 8/26/21 10:45 AM, Adam D Ruppe wrote:
On Thursday, 26 August 2021 at 17:39:16 UTC, Ali Çehreli wrote:
String mixins are appealing because they can inject code like C macros
do. It's not trivially possible to do the same with template mixins.
Template mixins are great, but obviously totally inappropriate here. I'm
just talking about using a normal function, possibly with an alias
argument, instead of any kind of mixin.
Too often D programmers reach for fancy code generation when a simpler
function is a better fit.
Agreed. Something like the following for the OP:
import std.traits : isPointer;
auto valueFrom(T)(T var)
if (isPointer!(typeof(var))) {
return *var;
}
auto valueFrom(T)(T var)
if (!isPointer!(typeof(var))) {
return var;
}
void main() {
int x;
int i = 42;
x = valueFrom(i);
int * p = &i;
x = valueFrom(p);
}
In some cases it's more useful to have a 'static if' inside a single
function template instead of two separate function templates.
Ali
