1const math = @import("std").math;
 2const print = @import("std").debug.print;
 3pub fn main() !void {
 4    var byte: u8 = 255;
 5
 6    byte = if (math.add(u8, byte, 1)) |result| result else |err| {
 7        print("unable to add one: {s}\n", .{@errorName(err)});
 8        return err;
 9    };
10
11    print("result: {}\n", .{byte});
12}
13
14// exe=fail