remove unnecessary parentheses from range notation

[rust.git] / src / libcore / slice.rs

diff --git a/src/libcore/slice.rs b/src/libcore/slice.rs
index 22da168911daad66f84a6bc6a731408cfbae17c0..4c97472c0015f966c4c34df174b257a9b81bdf6d 100644 (file)
--- a/src/libcore/slice.rs
+++ b/src/libcore/slice.rs
@@ -240,7 +240,7 @@ fn tail(&self) -> &[T] { &self[1..] }
 
     #[inline]
     fn init(&self) -> &[T] {
-        &self[..(self.len() - 1)]
+        &self[..self.len() - 1]
     }
 
     #[inline]
@@ -449,7 +449,7 @@ fn starts_with(&self, needle: &[T]) -> bool where T: PartialEq {
     #[inline]
     fn ends_with(&self, needle: &[T]) -> bool where T: PartialEq {
         let (m, n) = (self.len(), needle.len());
-        m >= n && needle == &self[(m-n)..]
+        m >= n && needle == &self[m-n..]
     }
 
     #[unstable]
@@ -973,7 +973,7 @@ fn next(&mut self) -> Option<&'a [T]> {
             None => self.finish(),
             Some(idx) => {
                 let ret = Some(&self.v[..idx]);
-                self.v = &self.v[(idx + 1)..];
+                self.v = &self.v[idx + 1..];
                 ret
             }
         }
@@ -998,7 +998,7 @@ fn next_back(&mut self) -> Option<&'a [T]> {
         match self.v.iter().rposition(|x| (self.pred)(x)) {
             None => self.finish(),
             Some(idx) => {
-                let ret = Some(&self.v[(idx + 1)..]);
+                let ret = Some(&self.v[idx + 1..]);
                 self.v = &self.v[..idx];
                 ret
             }