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std: Changing the meaning of the count to splitn

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This commit is an implementation of [RFC 979][rfc] which changes the meaning of
the count parameter to the `splitn` function on strings and slices. The
parameter now means the number of items that are returned from the iterator, not
the number of splits that are made.

[rfc]: https://github.com/rust-lang/rfcs/pull/979

Closes #23911
[breaking-change]
This commit is contained in:
Alex Crichton 2015-04-01 11:28:34 -07:00
parent d528aa9960
commit e98dce3e00
14 changed files with 88 additions and 69 deletions
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2
src/libstd/path.rs
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@ -406,7 +406,7 @@ fn split_file_at_dot(file: &OsStr) -> (Option<&OsStr>, Option<&OsStr>) {
// contents of the encoding and (2) new &OsStr values are produced
// only from ASCII-bounded slices of existing &OsStr values.
let mut iter = os_str_as_u8_slice(file).rsplitn(1, |b| *b == b'.');
let mut iter = os_str_as_u8_slice(file).rsplitn(2, |b| *b == b'.');
let after = iter.next();
let before = iter.next();
if before == Some(b"") {