reset

uint a = 159;
a.reset();
assert(a == a.init);

string b = "bla";
b.reset();
assert(b == b.init);

import std.typecons : Nullable;
auto n = Nullable!(size_t,
                   size_t.max)();
import nxt.predicates : isUntouched;
assert(n.isUntouched);
n = 0;
assert(!n.isUntouched);
assert(n == 0);
n.reset;
assert(n.isUntouched);