Meg's Code Collection

lib/zig/extras

1	const std = @import("std");
2	const string = []const u8;
3	const extras = @import("./lib.zig");
4
5	pub fn trimPrefixEnsure(in: string, prefix: string) ?string {
6	if (!std.mem.startsWith(u8, in, prefix)) return null;
7	return in[prefix.len..];
8	}
9
10	test {
11	try std.testing.expect(trimPrefixEnsure("abaabbaaba", "c") == null);
12	}
13	test {
14	try std.testing.expect(std.mem.eql(u8, trimPrefixEnsure("abaabbaaba", "aba").?, "abbaaba"));
15	}