On Thursday, 29 March 2018 at 19:11:30 UTC, Dgame wrote:
Just to be sure it does not got los: You know that you can
avoid the temp/copy if you add one method to your struct, yes?
----
import std.stdio;
struct Big {
string name;
float[1000] values;
this(string name) {
this.name = name;
}
@disable
this(this);
ref auto byRef() inout {
return this;
}
}
void foo(ref const Big b) {
writeln(b.name);
}
void main() {
Big b = Big("#1");
foo(b);
foo(Big("#2").byRef);
}
----
That works like a charm and avoids any need for rvalue
references. Just add it as mixin template in Phobos or
something like that.
Doesn't work with built-in types like float.
Just adds bloat for operators like opBinary if you want that to
be ref.
foo((a.byRef + b.byRef * c.byRef).byRef)
// vs
foo(a + b * c);
It's kind of funny all this talk about allowing temporaries to
bind to refs being messy, yet you can already bind a temporary to
a ref in a messy way using that.
