Type Function Child [src]

Given a parameterized type (array, vector, pointer, optional), returns the "child type".

Prototype

pub fn Child(comptime T: type) type

Parameters

T: type

Example

 test Child {
    try testing.expect(Child([1]u8) == u8);
    try testing.expect(Child(*u8) == u8);
    try testing.expect(Child([]u8) == u8);
    try testing.expect(Child(?u8) == u8);
    try testing.expect(Child(@Vector(2, u8)) == u8);
}

Source

  pub fn Child(comptime T: type) type {
    return switch (@typeInfo(T)) {
        .array => |info| info.child,
        .vector => |info| info.child,
        .pointer => |info| info.child,
        .optional => |info| info.child,
        else => @compileError("Expected pointer, optional, array or vector type, found '" ++ @typeName(T) ++ "'"),
    };
}  