libstd: remove unnecessary `as_slice()` calls

3 files changed, 5 insertions, 5 deletions

diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
index 9402c63dcf5..16779a80185 100644
--- a/src/libstd/sys/windows/fs.rs
+++ b/src/libstd/sys/windows/fs.rs
@@ -376,8 +376,8 @@ pub fn readlink(p: &Path) -> IoResult<Path> {
                                   libc::VOLUME_NAME_DOS)
     });
     let ret = match ret {
-        Some(ref s) if s.as_slice().starts_with(r"\\?\") => { // "
-            Ok(Path::new(s.as_slice().slice_from(4)))
+        Some(ref s) if s.starts_with(r"\\?\") => { // "
+            Ok(Path::new(s.slice_from(4)))
         }
         Some(s) => Ok(Path::new(s)),
         None => Err(super::last_error()),
diff --git a/src/libstd/sys/windows/process.rs b/src/libstd/sys/windows/process.rs
index 78a8e09dac1..2af5e4890e8 100644
--- a/src/libstd/sys/windows/process.rs
+++ b/src/libstd/sys/windows/process.rs
@@ -223,7 +223,7 @@ impl Process {
 
             with_envp(cfg.env(), |envp| {
                 with_dirp(cfg.cwd(), |dirp| {
-                    let mut cmd_str: Vec<u16> = cmd_str.as_slice().utf16_units().collect();
+                    let mut cmd_str: Vec<u16> = cmd_str.utf16_units().collect();
                     cmd_str.push(0);
                     let created = CreateProcessW(ptr::null(),
                                                  cmd_str.as_mut_ptr(),
@@ -433,7 +433,7 @@ fn with_envp<K, V, T>(env: Option<&collections::HashMap<K, V>>,
                 let kv = format!("{}={}",
                                  pair.ref0().container_as_str().unwrap(),
                                  pair.ref1().container_as_str().unwrap());
-                blk.extend(kv.as_slice().utf16_units());
+                blk.extend(kv.utf16_units());
                 blk.push(0);
             }
 
diff --git a/src/libstd/sys/windows/tty.rs b/src/libstd/sys/windows/tty.rs
index 0e7b06cbb94..51679bb2003 100644
--- a/src/libstd/sys/windows/tty.rs
+++ b/src/libstd/sys/windows/tty.rs
@@ -113,7 +113,7 @@ impl TTY {
     pub fn write(&mut self, buf: &[u8]) -> IoResult<()> {
         let utf16 = match from_utf8(buf) {
             Some(utf8) => {
-                utf8.as_slice().utf16_units().collect::<Vec<u16>>()
+                utf8.utf16_units().collect::<Vec<u16>>()
             }
             None => return Err(invalid_encoding()),
         };