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Path::with_extension: show that it adds an extension where one did no… #141477

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merged 2 commits into from
May 29, 2025
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Path::with_extension: show that it adds an extension where one did no… #141477

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a3bd12b
Path::with_extension: improve examples
tshepang May 24, 2025
248f4b2
reduce clutter... too many imports
tshepang May 24, 2025
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25 changes: 20 additions & 5 deletions library/std/src/path.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2739,15 +2739,30 @@ impl Path {
/// # Examples
///
/// ```
/// use std::path::{Path, PathBuf};
/// use std::path::Path;
///
/// let path = Path::new("foo.rs");
/// assert_eq!(path.with_extension("txt"), PathBuf::from("foo.txt"));
/// assert_eq!(path.with_extension("txt"), Path::new("foo.txt"));
/// assert_eq!(path.with_extension(""), Path::new("foo"));
/// ```
///
/// Handling multiple extensions:
///
/// ```
/// use std::path::Path;
///
/// let path = Path::new("foo.tar.gz");
/// assert_eq!(path.with_extension(""), PathBuf::from("foo.tar"));
/// assert_eq!(path.with_extension("xz"), PathBuf::from("foo.tar.xz"));
/// assert_eq!(path.with_extension("").with_extension("txt"), PathBuf::from("foo.txt"));
/// assert_eq!(path.with_extension("xz"), Path::new("foo.tar.xz"));
/// assert_eq!(path.with_extension("").with_extension("txt"), Path::new("foo.txt"));
/// ```
///
/// Adding an extension where one did not exist:
///
/// ```
/// use std::path::Path;
///
/// let path = Path::new("foo");
/// assert_eq!(path.with_extension("rs"), Path::new("foo.rs"));
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn with_extension<S: AsRef<OsStr>>(&self, extension: S) -> PathBuf {
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