On 2/20/18 8:53 PM, psychoticRabbit wrote:
On Tuesday, 20 February 2018 at 13:40:16 UTC, bauss wrote:
I should probably have put an example usage to show how it's used:
....
This makes we want to go back and program in C again ;-)
(but thanks for taking the time to demo/explain)
Mixins are one of those things that you need occasionally, but are weird
to think about. But it's really akin to the C preprocessor (only
better). They can be super-useful and make your life easier.
For example:
struct MyInt(T)
{
T t;
auto opBinary(string op)(const MyInt other) const
{
return mixin("MyInt(t " ~ op ~ " other.t)");
}
}
void main()
{
import std.stdio;
alias mi = MyInt!int;
mi i = mi(5);
writeln(i + mi(6)); // MyInt!int(11)
writeln(i - mi(2)); // MyInt!int(3)
writeln(i * mi(4)); // MyInt!int(20)
writeln(i / mi(2)); // MyInt!int(2)
writeln(i ^ mi(1)); // MyInt!int(4)
... // etc.
}
The other thing that always gets me are all the different "is"
expressions. I never remember those things.
-Steve
