diff options
Diffstat (limited to 'src/libcore')
| -rw-r--r-- | src/libcore/char/methods.rs | 19 | ||||
| -rw-r--r-- | src/libcore/slice/mod.rs | 9 |
2 files changed, 21 insertions, 7 deletions
diff --git a/src/libcore/char/methods.rs b/src/libcore/char/methods.rs index e843303380a..99f88591eea 100644 --- a/src/libcore/char/methods.rs +++ b/src/libcore/char/methods.rs @@ -553,10 +553,12 @@ impl char { /// 'XID_Start' is a Unicode Derived Property specified in /// [UAX #31](http://unicode.org/reports/tr31/#NFKC_Modifications), /// mostly similar to `ID_Start` but modified for closure under `NFKx`. - #[unstable(feature = "rustc_private", - reason = "mainly needed for compiler internals", - issue = "27812")] - #[inline] + #[cfg_attr(bootstrap, + unstable(feature = "rustc_private", + reason = "mainly needed for compiler internals", + issue = "27812"))] + #[cfg_attr(not(bootstrap), + unstable(feature = "unicode_internals", issue = "0"))] pub fn is_xid_start(self) -> bool { derived_property::XID_Start(self) } @@ -567,9 +569,12 @@ impl char { /// 'XID_Continue' is a Unicode Derived Property specified in /// [UAX #31](http://unicode.org/reports/tr31/#NFKC_Modifications), /// mostly similar to 'ID_Continue' but modified for closure under NFKx. - #[unstable(feature = "rustc_private", - reason = "mainly needed for compiler internals", - issue = "27812")] + #[cfg_attr(bootstrap, + unstable(feature = "rustc_private", + reason = "mainly needed for compiler internals", + issue = "27812"))] + #[cfg_attr(not(bootstrap), + unstable(feature = "unicode_internals", issue = "0"))] #[inline] pub fn is_xid_continue(self) -> bool { derived_property::XID_Continue(self) diff --git a/src/libcore/slice/mod.rs b/src/libcore/slice/mod.rs index 8c7b9cf1c5d..e7b820e79e5 100644 --- a/src/libcore/slice/mod.rs +++ b/src/libcore/slice/mod.rs @@ -1263,6 +1263,15 @@ impl<T> [T] { /// assert!(v.contains(&30)); /// assert!(!v.contains(&50)); /// ``` + /// + /// If you do not have an `&T`, but just an `&U` such that `T: Borrow<U>` + /// (e.g. `String: Borrow<str>`), you can use `iter().any`: + /// + /// ``` + /// let v = [String::from("hello"), String::from("world")]; // slice of `String` + /// assert!(v.iter().any(|e| e == "hello")); // search with `&str` + /// assert!(!v.iter().any(|e| e == "hi")); + /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn contains(&self, x: &T) -> bool where T: PartialEq |