Template tryVisit

Instead of failing to compile, tryVisit will throw an Exception if none of the handlers is able to handle the value contained in tu.

Contained Functions

Example

import std.exception : assertThrown;

union U {
	int number;
	string text;
}
alias TU = TaggedUnion!U;

auto tu = TU.number(42);
tu.tryVisit!((int n) { assert(n == 42); });
assertThrown(tu.tryVisit!((string s) { assert(false); }));