| 1 | const std = @import("std"); |
| 2 | const string = []const u8; |
| 3 | const extras = @import("./lib.zig"); |
| 4 | |
| 5 | pub fn nullifyS(s: ?string) ?string { |
| 6 | if (s == null) return null; |
| 7 | if (s.?.len == 0) return null; |
| 8 | return s.?; |
| 9 | } |
| 10 | |
| 11 | test { |
| 12 | try std.testing.expect(nullifyS(null) == null); |
| 13 | } |
| 14 | test { |
| 15 | try std.testing.expect(nullifyS("") == null); |
| 16 | } |
| 17 | test { |
| 18 | try std.testing.expect(nullifyS("a") != null); |
| 19 | try std.testing.expect(nullifyS("a").?.len == 1); |
| 20 | try std.testing.expect(nullifyS("a").?[0] == 'a'); |
| 21 | } |