doc: Fix extraneous as_slice()'s in docstrings

src/doc/style/errors/ergonomics.md

@@ -22,9 +22,9 @@ fn write_info(info: &Info) -> Result<(), IoError> {
     let mut file = File::open_mode(&Path::new("my_best_friends.txt"),
                                    Open, Write);
     // Early return on error
-    try!(file.write_line(format!("name: {}", info.name).as_slice()));
+    try!(file.write_line(&format!("name: {}", info.name)));
-    try!(file.write_line(format!("age: {}", info.age).as_slice()));
+    try!(file.write_line(&format!("age: {}", info.age)));
-    try!(file.write_line(format!("rating: {}", info.rating).as_slice()));
+    try!(file.write_line(&format!("rating: {}", info.rating)));
     return Ok(());
 }
 ```
@@ -44,15 +44,15 @@ fn write_info(info: &Info) -> Result<(), IoError> {
     let mut file = File::open_mode(&Path::new("my_best_friends.txt"),
                                    Open, Write);
     // Early return on error
-    match file.write_line(format!("name: {}", info.name).as_slice()) {
+    match file.write_line(&format!("name: {}", info.name)) {
         Ok(_) => (),
         Err(e) => return Err(e)
     }
-    match file.write_line(format!("age: {}", info.age).as_slice()) {
+    match file.write_line(&format!("age: {}", info.age)) {
         Ok(_) => (),
         Err(e) => return Err(e)
     }
-    return file.write_line(format!("rating: {}", info.rating).as_slice());
+    return file.write_line(&format!("rating: {}", info.rating));
 }
 ```
 

src/libcollections/fmt.rs

@@ -198,7 +198,7 @@
 //!         // for details, and the function `pad` can be used to pad strings.
 //!         let decimals = f.precision().unwrap_or(3);
 //!         let string = f64::to_str_exact(magnitude, decimals);
-//!         f.pad_integral(true, "", string.as_slice())
+//!         f.pad_integral(true, "", &string)
 //!     }
 //! }
 //!

src/libcollections/string.rs

@@ -139,7 +139,7 @@ impl String {
     /// ```rust
     /// let input = b"Hello \xF0\x90\x80World";
     /// let output = String::from_utf8_lossy(input);
-    /// assert_eq!(output.as_slice(), "Hello \u{FFFD}World");
+    /// assert_eq!(output, "Hello \u{FFFD}World");
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn from_utf8_lossy<'a>(v: &'a [u8]) -> Cow<'a, str> {
@@ -355,7 +355,7 @@ impl String {
     /// ```
     /// let mut s = String::from_str("foo");
     /// s.push_str("bar");
-    /// assert_eq!(s.as_slice(), "foobar");
+    /// assert_eq!(s, "foobar");
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -450,7 +450,7 @@ impl String {
     /// s.push('1');
     /// s.push('2');
     /// s.push('3');
-    /// assert_eq!(s.as_slice(), "abc123");
+    /// assert_eq!(s, "abc123");
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -503,7 +503,7 @@ impl String {
     /// ```
     /// let mut s = String::from_str("hello");
     /// s.truncate(2);
-    /// assert_eq!(s.as_slice(), "he");
+    /// assert_eq!(s, "he");
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -622,7 +622,7 @@ impl String {
     ///     assert!(vec == &[104, 101, 108, 108, 111]);
     ///     vec.reverse();
     /// }
-    /// assert_eq!(s.as_slice(), "olleh");
+    /// assert_eq!(s, "olleh");
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]

src/libcore/result.rs

@@ -178,13 +178,13 @@
 //! fn write_info(info: &Info) -> Result<(), IoError> {
 //!     let mut file = File::open_mode(&Path::new("my_best_friends.txt"), Open, Write);
 //!     // Early return on error
-//!     if let Err(e) = file.write_line(format!("name: {}", info.name).as_slice()) {
+//!     if let Err(e) = file.write_line(&format!("name: {}", info.name)) {
 //!         return Err(e)
 //!     }
-//!     if let Err(e) = file.write_line(format!("age: {}", info.age).as_slice()) {
+//!     if let Err(e) = file.write_line(&format!("age: {}", info.age)) {
 //!         return Err(e)
 //!     }
-//!     return file.write_line(format!("rating: {}", info.rating).as_slice());
+//!     return file.write_line(&format!("rating: {}", info.rating));
 //! }
 //! ```
 //!
@@ -202,9 +202,9 @@
 //! fn write_info(info: &Info) -> Result<(), IoError> {
 //!     let mut file = File::open_mode(&Path::new("my_best_friends.txt"), Open, Write);
 //!     // Early return on error
-//!     try!(file.write_line(format!("name: {}", info.name).as_slice()));
+//!     try!(file.write_line(&format!("name: {}", info.name)));
-//!     try!(file.write_line(format!("age: {}", info.age).as_slice()));
+//!     try!(file.write_line(&format!("age: {}", info.age)));
-//!     try!(file.write_line(format!("rating: {}", info.rating).as_slice()));
+//!     try!(file.write_line(&format!("rating: {}", info.rating)));
 //!     return Ok(());
 //! }
 //! ```

src/libgetopts/lib.rs

@@ -46,7 +46,7 @@
 //!
 //! fn print_usage(program: &str, opts: &[OptGroup]) {
 //!     let brief = format!("Usage: {} [options]", program);
-//!     print!("{}", usage(brief.as_slice(), opts));
+//!     print!("{}", usage(brief, opts));
 //! }
 //!
 //! fn main() {
@@ -63,17 +63,17 @@
 //!         Err(f) => { panic!(f.to_string()) }
 //!     };
 //!     if matches.opt_present("h") {
-//!         print_usage(program.as_slice(), opts);
+//!         print_usage(program, opts);
 //!         return;
 //!     }
 //!     let output = matches.opt_str("o");
 //!     let input = if !matches.free.is_empty() {
 //!         matches.free[0].clone()
 //!     } else {
-//!         print_usage(program.as_slice(), opts);
+//!         print_usage(program, opts);
 //!         return;
 //!     };
-//!     do_work(input.as_slice(), output);
+//!     do_work(input, output);
 //! }
 //! ```
 

src/librustc_bitflags/lib.rs

@@ -86,7 +86,7 @@
 ///     let mut flags = FLAG_A | FLAG_B;
 ///     flags.clear();
 ///     assert!(flags.is_empty());
-///     assert_eq!(format!("{:?}", flags).as_slice(), "hi!");
+///     assert_eq!(format!("{:?}", flags), "hi!");
 /// }
 /// ```
 ///

src/libserialize/json.rs

@@ -188,7 +188,7 @@
 //!     let json_str: String = json_obj.to_string();
 //!
 //!     // Deserialize like before
-//!     let decoded: TestStruct = json::decode(json_str.as_slice()).unwrap();
+//!     let decoded: TestStruct = json::decode(json_str)).unwrap();
 //! }
 //! ```