diff options
| author | Andrew Kelley <andrew@ziglang.org> | 2021-04-25 13:27:44 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-04-25 13:27:44 -0400 |
| commit | 6f61594692af846226880e5903ad26a922014d55 (patch) | |
| tree | 4524089b8c9cc6c69c65a73cf20380a66fcc29be /lib/std/meta.zig | |
| parent | 5a94794b73c8f9d042bc7928d071cc1004487983 (diff) | |
| parent | 89c41f30c3e62e8b5c03457d1f95dc115a27ef15 (diff) | |
| download | zig-6f61594692af846226880e5903ad26a922014d55.tar.gz zig-6f61594692af846226880e5903ad26a922014d55.zip | |
Merge pull request #8496 from xackus/isError
std.meta: add isError
Diffstat (limited to 'lib/std/meta.zig')
| -rw-r--r-- | lib/std/meta.zig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/std/meta.zig b/lib/std/meta.zig index c6f800ca2c..dd6f500076 100644 --- a/lib/std/meta.zig +++ b/lib/std/meta.zig @@ -1346,3 +1346,13 @@ test "shuffleVectorIndex" { testing.expect(shuffleVectorIndex(6, vector_len) == -3); testing.expect(shuffleVectorIndex(7, vector_len) == -4); } + +/// Returns whether `error_union` contains an error. +pub fn isError(error_union: anytype) bool { + return if (error_union) |_| false else |_| true; +} + +test "isError" { + std.testing.expect(isError(math.absInt(@as(i8, -128)))); + std.testing.expect(!isError(math.absInt(@as(i8, -127)))); +} |