`thing_as_thing` #145933

Original file line number	Diff line number	Diff line change
Expand Up		@@ -650,6 +650,17 @@ impl CStr {
		pub fn display(&self) -> impl fmt::Display {
		crate::bstr::ByteStr::from_bytes(self.to_bytes())
		}

	/// Returns the same string as a string slice `&CStr`.
	///
	/// This method is redundant when used directly on `&CStr`, but
	/// it helps dereferencing other string-like types to string slices,
	/// for example references to `Box<CStr>` or `Arc<CStr>`.
	#[inline]
	#[unstable(feature = "thing_as_thing", issue = "none")]
	pub const fn as_c_str(&self) -> &CStr {
	self
	}
		}

		#[stable(feature = "c_string_eq_c_str", since = "1.90.0")]
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22 changes: 22 additions & 0 deletions library/core/src/slice/mod.rs

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -4893,6 +4893,28 @@ impl<T> [T] {

		if start <= self.len() && end <= self.len() { Some(start..end) } else { None }
		}

	/// Returns the same slice `&[T]`.
	///
	/// This method is redundant when used directly on `&[T]`, but
	/// it helps dereferencing other "container" types to slices,
	/// for example `Box<[T]>` or `Arc<[T]>`.
	#[inline]
	#[unstable(feature = "thing_as_thing", issue = "none")]
	pub const fn as_slice(&self) -> &[T] {
	self
	}

	/// Returns the same slice `&mut [T]`.
	///
	/// This method is redundant when used directly on `&mut [T]`, but
	/// it helps dereferencing other "container" types to slices,
	/// for example `Box<[T]>` or `Arc<[T]>`.
	#[inline]
	#[unstable(feature = "thing_as_thing", issue = "none")]
	pub const fn as_mut_slice(&mut self) -> &mut [T] {
	self
	}
		}

		impl<T> [MaybeUninit<T>] {
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11 changes: 11 additions & 0 deletions library/std/src/ffi/os_str.rs

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -1273,6 +1273,17 @@ impl OsStr {
		pub fn display(&self) -> Display<'_> {
		Display { os_str: self }
		}

	/// Returns the same string as a string slice `&OsStr`.
	///
	/// This method is redundant when used directly on `&OsStr`, but
	/// it helps dereferencing other string-like types to string slices,
	/// for example references to `Box<OsStr>` or `Arc<OsStr>`.
	#[inline]
	#[unstable(feature = "thing_as_thing", issue = "none")]
	pub const fn as_os_str(&self) -> &OsStr {
	self
	}
		}

		#[stable(feature = "box_from_os_str", since = "1.17.0")]
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11 changes: 11 additions & 0 deletions library/std/src/path.rs

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -2993,6 +2993,17 @@ impl Path {
		Display { inner: self.inner.display() }
		}

	/// Returns the same path as `&Path`.
	///
	/// This method is redundant when used directly on `&Path`, but
	/// it helps dereferencing other `PathBuf`-like types to `Path`s,
	/// for example references to `Box<Path>` or `Arc<Path>`.
	#[inline]
	#[unstable(feature = "thing_as_thing", issue = "none")]
	pub const fn as_path(&self) -> &Path {
	self
	}

		/// Queries the file system to get information about a file, directory, etc.
		///
		/// This function will traverse symbolic links to query information about the
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