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docs(std): add docs for cof_from_cstr impls

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CC #51430
This commit is contained in:
Michael Howell 2021-09-15 09:14:20 -07:00
parent ef44452a83
commit cc7929b1bd
1 changed files with 3 additions and 0 deletions
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3
library/std/src/ffi/c_str.rs
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@ -915,6 +915,7 @@ impl From<CString> for Box<CStr> {
#[stable(feature = "cow_from_cstr", since = "1.28.0")]
impl<'a> From<CString> for Cow<'a, CStr> {
/// Converts a [`CString`] into an owned [`Cow`] without copying or allocating.
#[inline]
fn from(s: CString) -> Cow<'a, CStr> {
Cow::Owned(s)
@ -923,6 +924,7 @@ impl<'a> From<CString> for Cow<'a, CStr> {
#[stable(feature = "cow_from_cstr", since = "1.28.0")]
impl<'a> From<&'a CStr> for Cow<'a, CStr> {
/// Converts a [`CStr`] into a borrowed [`Cow`] without copying or allocating.
#[inline]
fn from(s: &'a CStr) -> Cow<'a, CStr> {
Cow::Borrowed(s)
@ -931,6 +933,7 @@ impl<'a> From<&'a CStr> for Cow<'a, CStr> {
#[stable(feature = "cow_from_cstr", since = "1.28.0")]
impl<'a> From<&'a CString> for Cow<'a, CStr> {
/// Converts a `&`[`CString`] into a borrowed [`Cow`] without copying or allocating.
#[inline]
fn from(s: &'a CString) -> Cow<'a, CStr> {
Cow::Borrowed(s.as_c_str())