Member Access Based On A Runtime String

[Jack Stouffer via Digitalmars-d-learn]

On Tuesday, 1 March 2016 at 08:53:20 UTC, Adrian Matoga wrote:
> struct Foo
> {
> 	string foo = "dog";
> 	int bar = 42;
> 	int baz = 31337;
> }
>
> void set(P, T)(ref P p, string name, auto ref T value)
> {
> 	foreach (mem; __traits(allMembers, P)) {
> 		static if (is(typeof(__traits(getMember, p, mem)) Q)) {
> 			static if (is(Q : T)) {
> 				if (mem == name) {
> 					__traits(getMember, p, mem) = value;
> 					return;
> 				}
> 			}
> 		}
> 	}
> 	assert(0, P.stringof ~ " has no member " ~ name);
> }
>
> unittest
> {
> 	Foo foo;
> 	foo.set("bar", 15);
> 	assert(foo.bar == 15);
> 	foo.set("foo", "cat");
> 	assert(foo.foo == "cat");
> }

Thanks. This should be in Phobos