Rename Result::unwrap_infallible to into_ok

Author: mzabaluev

src/libcore/result.rs

@@ -1086,11 +1086,11 @@ impl<T, E: Into<!>> Result<T, E> {
     ///     Ok("this is fine".into())
     /// }
     ///
-    /// let s: String = only_good_news().unwrap_infallible();
+    /// let s: String = only_good_news().into_ok();
     /// println!("{}", s);
     /// ```
     #[inline]
-    pub fn unwrap_infallible(self) -> T {
+    pub fn into_ok(self) -> T {
         match self {
             Ok(x) => x,
             Err(e) => e.into(),

src/libcore/tests/result.rs

@@ -198,12 +198,12 @@ pub fn test_unwrap_or_default() {
 }
 
 #[test]
-pub fn test_unwrap_infallible() {
+pub fn test_into_ok() {
     fn infallible_op() -> Result<isize, !> {
         Ok(666)
     }
 
-    assert_eq!(infallible_op().unwrap_infallible(), 666);
+    assert_eq!(infallible_op().into_ok(), 666);
 
     enum MyNeverToken {}
     impl From<MyNeverToken> for ! {
@@ -216,7 +216,7 @@ pub fn test_unwrap_infallible() {
         Ok(667)
     }
 
-    assert_eq!(infallible_op2().unwrap_infallible(), 667);
+    assert_eq!(infallible_op2().into_ok(), 667);
 }
 
 #[test]