doc/langref/test_void_in_hashmap.zig


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const std = @import("std");
const expect = std.testing.expect;

test "turn HashMap into a set with void" {
    var map = std.AutoHashMap(i32, void).init(std.testing.allocator);
    defer map.deinit();

    try map.put(1, {});
    try map.put(2, {});

    try expect(map.contains(2));
    try expect(!map.contains(3));

    _ = map.remove(2);
    try expect(!map.contains(2));
}

// test