How to use CRC structs in `std.hash`?

Help
1

I noticed that in the source code for zig that there are some predefined CRC structs in (zig/lib/std/hash/crc.zig). I wrote a small test program to try to use them, but they don’t seem to be available in the way that I was expecting.

Compiling with 0.17.0-dev.1426+58a94eaae. I don’t really care about GSM, just an example.

const std = @import("std");

pub fn main() void {
    const data = "Hello, GSM!";
    const result = std.hash.Crc3Gsm.hash(data);
    std.debug.print("CRC-3 GSM: {x}\n", .{result});
}

test.zig:5:29: error: root source file struct 'hash' has no member named 'Crc3Gsm'
    const result = std.hash.Crc3Gsm.hash(data);
2

Use std.hash.crc.@"CRC-3/GSM".

3

The name string identifier syntax. As @rosew0od noted, you must reference it in quotations with @ prefix, e.g. @"identifier with spaces or other non-standard characters".