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Document that write_all will not call write if given an empty buffer #68627

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Jan 29, 2020
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Document that write_all will not call write if given an empty buffer #68627

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2 changes: 2 additions & 0 deletions src/libstd/io/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1327,6 +1327,8 @@ pub trait Write {
/// not of [`ErrorKind::Interrupted`] kind generated from this method will be
/// returned.
///
/// If the buffer contains no data, this will never call [`write`].
///
/// # Errors
///
/// This function will return the first error of
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