doc: use of the import should be implied

src/libstd/path.rs

@@ -1237,15 +1237,15 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// Path::new("foo.txt");
    /// ```
    ///
    /// You can create `Path`s from `String`s, or even other `Path`s:
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let string = String::from("foo.txt");
    /// let from_string = Path::new(&string);
@@ -1262,7 +1262,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let os_str = Path::new("foo.txt").as_os_str();
    /// assert_eq!(os_str, std::ffi::OsStr::new("foo.txt"));
@@ -1279,7 +1279,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path_str = Path::new("foo.txt").to_str();
    //// assert_eq!(path_str, Some("foo.txt"));
@@ -1296,7 +1296,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path_str = Path::new("foo.txt").to_string_lossy();
    /// assert_eq!(path_str, "foo.txt");
@@ -1311,7 +1311,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path_buf = Path::new("foo.txt").to_path_buf();
    /// assert_eq!(path_buf, std::path::PathBuf::from("foo.txt"));
@@ -1333,7 +1333,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// assert!(!Path::new("foo.txt").is_absolute());
    /// ```
@@ -1348,7 +1348,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// assert!(Path::new("foo.txt").is_relative());
    /// ```
@@ -1379,7 +1379,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// assert!(Path::new("/etc/passwd").has_root());
    /// ```
@@ -1395,7 +1395,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("/foo/bar");
    /// let parent = path.parent().unwrap();
@@ -1425,7 +1425,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    /// use std::ffi::OsStr;
    ///
    /// let path = Path::new("foo.txt");
@@ -1458,7 +1458,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("/etc/passwd");
    ///
@@ -1478,7 +1478,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("/etc/passwd");
    ///
@@ -1501,7 +1501,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("foo.rs");
    ///
@@ -1524,7 +1524,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("foo.rs");
    ///
@@ -1542,7 +1542,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::{Path, PathBuf};
    /// # use std::path::{Path, PathBuf};
    ///
    /// assert_eq!(Path::new("/etc").join("passwd"), PathBuf::from("/etc/passwd"));
    /// ```
@@ -1560,7 +1560,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::{Path, PathBuf};
    /// # use std::path::{Path, PathBuf};
    ///
    /// let path = Path::new("/tmp/foo.txt");
    /// assert_eq!(path.with_file_name("bar.txt"), PathBuf::from("/tmp/bar.txt"));
@@ -1579,7 +1579,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::{Path, PathBuf};
    /// # use std::path::{Path, PathBuf};
    ///
    /// let path = Path::new("foo.rs");
    /// assert_eq!(path.with_extension("txt"), PathBuf::from("foo.txt"));
@@ -1596,7 +1596,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::{Path, Component};
    /// # use std::path::{Path, Component};
    /// use std::ffi::OsStr;
    ///
    /// let mut components = Path::new("/tmp/foo.txt").components();
@@ -1623,7 +1623,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::{self, Path};
    /// # use std::path::{self, Path};
    /// use std::ffi::OsStr;
    ///
    /// let mut it = Path::new("/tmp/foo.txt").iter();
@@ -1643,7 +1643,7 @@ impl Path {
    /// # Examples
    ///
    /// ```
    /// use std::path::Path;
    /// # use std::path::Path;
    ///
    /// let path = Path::new("/tmp/foo.rs");
    ///