1const expect = @import("std").testing.expect;
 2
 3const CmdFn = struct {
 4    name: []const u8,
 5    func: fn (i32) i32,
 6};
 7
 8const cmd_fns = [_]CmdFn{
 9    CmdFn{ .name = "one", .func = one },
10    CmdFn{ .name = "two", .func = two },
11    CmdFn{ .name = "three", .func = three },
12};
13fn one(value: i32) i32 {
14    return value + 1;
15}
16fn two(value: i32) i32 {
17    return value + 2;
18}
19fn three(value: i32) i32 {
20    return value + 3;
21}
22
23fn performFn(comptime prefix_char: u8, start_value: i32) i32 {
24    var result: i32 = start_value;
25    comptime var i = 0;
26    inline while (i < cmd_fns.len) : (i += 1) {
27        if (cmd_fns[i].name[0] == prefix_char) {
28            result = cmd_fns[i].func(result);
29        }
30    }
31    return result;
32}
33
34test "perform fn" {
35    try expect(performFn('t', 1) == 6);
36    try expect(performFn('o', 0) == 1);
37    try expect(performFn('w', 99) == 99);
38}
39
40// test