StoppingPolicy

import std.algorithm.comparison : equal;
import std.exception : assertThrown;
import std.range.primitives;
import std.typecons : tuple;

auto a = [1, 2, 3];
auto b = [4, 5, 6, 7];

auto shortest = zip(StoppingPolicy.shortest, a, b);
assert(shortest.equal([
    tuple(1, 4),
    tuple(2, 5),
    tuple(3, 6)
]));

auto longest = zip(StoppingPolicy.longest, a, b);
assert(longest.equal([
    tuple(1, 4),
    tuple(2, 5),
    tuple(3, 6),
    tuple(0, 7)
]));

auto same = zip(StoppingPolicy.requireSameLength, a, b);
same.popFrontN(3);
assertThrown!Exception(same.popFront);