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 sliceTo(comptime T: type, haystack: []const T, needle: T) []const T {
6	if (std.mem.indexOfScalar(T, haystack, needle)) |index| {
7	return haystack[0..index];
8	}
9	return haystack;
10	}
11
12	test {
13	try std.testing.expect(std.mem.eql(u8, sliceTo(u8, "abcdefgh", 'd'), "abc"));
14	}
15	test {
16	try std.testing.expect(std.mem.eql(u8, sliceTo(u8, "abcdefgh", 'r'), "abcdefgh"));
17	}
18	test {
19	try std.testing.expect(std.mem.eql(u8, sliceTo(u8, "abcdefgh", 'a'), ""));
20	}