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| author | Brian Anderson <banderson@mozilla.com> | 2011-06-16 10:52:43 -0700 |
|---|---|---|
| committer | Brian Anderson <banderson@mozilla.com> | 2011-06-16 14:21:42 -0700 |
| commit | 0efd7fac8a3dbcf7c8bd19ea2ace05e4898bafae (patch) | |
| tree | 1e054e12305b7c6783176c9da1b70ee921e2694a /src/lib | |
| parent | 49a4867da6ba4ef1f6ee4977b243acc0953dda25 (diff) | |
| download | rust-0efd7fac8a3dbcf7c8bd19ea2ace05e4898bafae.tar.gz rust-0efd7fac8a3dbcf7c8bd19ea2ace05e4898bafae.zip | |
stdlib: Add option::is_some
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/option.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/option.rs b/src/lib/option.rs index 561456799f4..30066f4e196 100644 --- a/src/lib/option.rs +++ b/src/lib/option.rs @@ -21,6 +21,10 @@ fn is_none[T](&t[T] opt) -> bool { ret alt (opt) { case (none) { true } case (some(_)) { false } }; } +fn is_some[T](&t[T] opt) -> bool { + ret !is_none(opt); +} + fn from_maybe[T](&T def, &t[T] opt) -> T { auto f = bind util::id[T](_); ret maybe[T, T](def, f, opt); |