doc: add info about the u64 wrapped in Result

This commit is contained in:
Tshepang Lekhonkhobe 2015-08-06 00:48:57 +02:00
parent d019a49ac8
commit fc3df01eee

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@ -854,6 +854,8 @@ pub fn rename<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()>
/// Note that if `from` and `to` both point to the same file, then the file
/// will likely get truncated by this operation.
///
/// On success, the total number of bytes copied is returned.
///
/// # Errors
///
/// This function will return an error in the following situations, but is not