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Auto merge of #38144 - clarcharr:redundant, r=alexcrichton

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Remove redundant assertion near is_char_boundary

Follow-up from #38056. `is_char_boundary` already checks for `idx <= len`, so, an extra assertion is redundant.
This commit is contained in:
bors 2016-12-07 03:54:14 +00:00
commit 02ea82ddb8
1 changed files with 0 additions and 4 deletions
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4
src/libcollections/string.rs
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@ -1129,8 +1129,6 @@ impl String {
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn insert(&mut self, idx: usize, ch: char) {
let len = self.len();
assert!(idx <= len);
assert!(self.is_char_boundary(idx));
let mut bits = [0; 4];
let bits = ch.encode_utf8(&mut bits).as_bytes();
@ -1184,7 +1182,6 @@ impl String {
reason = "recent addition",
issue = "35553")]
pub fn insert_str(&mut self, idx: usize, string: &str) {
assert!(idx <= self.len());
assert!(self.is_char_boundary(idx));
unsafe {
@ -1288,7 +1285,6 @@ impl String {
#[unstable(feature = "string_split_off", issue = "38080")]
pub fn split_off(&mut self, mid: usize) -> String {
assert!(self.is_char_boundary(mid));
assert!(mid <= self.len());
let other = self.vec.split_off(mid);
unsafe { String::from_utf8_unchecked(other) }
}