Function compare [src]

This function does the same thing as comparison operators, however the operator is a runtime-known enum value. Works on any operands that support comparison operators.

Prototype

pub fn compare(a: anytype, op: CompareOperator, b: anytype) bool

Parameters

op: CompareOperator

Example

 test compare {
    try testing.expect(compare(@as(i8, -1), .lt, @as(u8, 255)));
    try testing.expect(compare(@as(i8, 2), .gt, @as(u8, 1)));
    try testing.expect(!compare(@as(i8, -1), .gte, @as(u8, 255)));
    try testing.expect(compare(@as(u8, 255), .gt, @as(i8, -1)));
    try testing.expect(!compare(@as(u8, 255), .lte, @as(i8, -1)));
    try testing.expect(compare(@as(i8, -1), .lt, @as(u9, 255)));
    try testing.expect(!compare(@as(i8, -1), .gte, @as(u9, 255)));
    try testing.expect(compare(@as(u9, 255), .gt, @as(i8, -1)));
    try testing.expect(!compare(@as(u9, 255), .lte, @as(i8, -1)));
    try testing.expect(compare(@as(i9, -1), .lt, @as(u8, 255)));
    try testing.expect(!compare(@as(i9, -1), .gte, @as(u8, 255)));
    try testing.expect(compare(@as(u8, 255), .gt, @as(i9, -1)));
    try testing.expect(!compare(@as(u8, 255), .lte, @as(i9, -1)));
    try testing.expect(compare(@as(u8, 1), .lt, @as(u8, 2)));
    try testing.expect(@as(u8, @bitCast(@as(i8, -1))) == @as(u8, 255));
    try testing.expect(!compare(@as(u8, 255), .eq, @as(i8, -1)));
    try testing.expect(compare(@as(u8, 1), .eq, @as(u8, 1)));
}

Source

  pub fn compare(a: anytype, op: CompareOperator, b: anytype) bool {
    return switch (op) {
        .lt => a < b,
        .lte => a <= b,
        .eq => a == b,
        .neq => a != b,
        .gt => a > b,
        .gte => a >= b,
    };
}  