rollup merge of rust-lang#18443 : alexcrichton/deref-vec-and-string

Author: alexcrichton

src/libcollections/str.rs

@@ -1677,40 +1677,6 @@ mod tests {
         assert_eq!(pos, p.len());
     }
 
-    #[test]
-    fn test_split_char_iterator() {
-        let data = "\nMäry häd ä little lämb\nLittle lämb\n";
-
-        let split: Vec<&str> = data.split(' ').collect();
-        assert_eq!( split, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        let mut rsplit: Vec<&str> = data.split(' ').rev().collect();
-        rsplit.reverse();
-        assert_eq!(rsplit, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        let split: Vec<&str> = data.split(|c: char| c == ' ').collect();
-        assert_eq!( split, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        let mut rsplit: Vec<&str> = data.split(|c: char| c == ' ').rev().collect();
-        rsplit.reverse();
-        assert_eq!(rsplit, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        // Unicode
-        let split: Vec<&str> = data.split('ä').collect();
-        assert_eq!( split, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
-
-        let mut rsplit: Vec<&str> = data.split('ä').rev().collect();
-        rsplit.reverse();
-        assert_eq!(rsplit, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
-
-        let split: Vec<&str> = data.split(|c: char| c == 'ä').collect();
-        assert_eq!( split, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
-
-        let mut rsplit: Vec<&str> = data.split(|c: char| c == 'ä').rev().collect();
-        rsplit.reverse();
-        assert_eq!(rsplit, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
-    }
-
     #[test]
     fn test_splitn_char_iterator() {
         let data = "\nMäry häd ä little lämb\nLittle lämb\n";
@@ -1729,28 +1695,6 @@ mod tests {
         assert_eq!(split, vec!["\nM", "ry h", "d ", " little lämb\nLittle lämb\n"]);
     }
 
-    #[test]
-    fn test_rsplitn_char_iterator() {
-        let data = "\nMäry häd ä little lämb\nLittle lämb\n";
-
-        let mut split: Vec<&str> = data.rsplitn(3, ' ').collect();
-        split.reverse();
-        assert_eq!(split, vec!["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        let mut split: Vec<&str> = data.rsplitn(3, |c: char| c == ' ').collect();
-        split.reverse();
-        assert_eq!(split, vec!["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
-
-        // Unicode
-        let mut split: Vec<&str> = data.rsplitn(3, 'ä').collect();
-        split.reverse();
-        assert_eq!(split, vec!["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
-
-        let mut split: Vec<&str> = data.rsplitn(3, |c: char| c == 'ä').collect();
-        split.reverse();
-        assert_eq!(split, vec!["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
-    }
-
     #[test]
     fn test_split_char_iterator_no_trailing() {
         let data = "\nMäry häd ä little lämb\nLittle lämb\n";
@@ -1762,19 +1706,6 @@ mod tests {
         assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb"]);
     }
 
-    #[test]
-    fn test_rev_split_char_iterator_no_trailing() {
-        let data = "\nMäry häd ä little lämb\nLittle lämb\n";
-
-        let mut split: Vec<&str> = data.split('\n').rev().collect();
-        split.reverse();
-        assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb", ""]);
-
-        let mut split: Vec<&str> = data.split_terminator('\n').rev().collect();
-        split.reverse();
-        assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb"]);
-    }
-
     #[test]
     fn test_words() {
         let data = "\n \tMäry   häd\tä  little lämb\nLittle lämb\n";

src/libcollections/string.rs

@@ -744,6 +744,11 @@ impl ops::Slice<uint, str> for String {
     }
 }
 
+#[experimental = "waiting on Deref stabilization"]
+impl ops::Deref<str> for String {
+    fn deref<'a>(&'a self) -> &'a str { self.as_slice() }
+}
+
 /// Wrapper type providing a `&String` reference via `Deref`.
 #[experimental]
 pub struct DerefString<'a> {