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Add _str.slice to std lib

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This commit is contained in:
Marijn Haverbeke 2011-04-26 17:38:14 +02:00
parent 2746d20c83
commit d0ed2e384a
1 changed files with 6 additions and 2 deletions
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8
src/lib/_str.rs
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@ -391,10 +391,14 @@ fn ends_with(str haystack, str needle) -> bool {
}
fn substr(str s, uint begin, uint len) -> str {
ret slice(s, begin, begin + len);
}
fn slice(str s, uint begin, uint end) -> str {
let str accum = "";
let uint i = begin;
while (i < begin+len) {
accum += unsafe_from_byte(s.(i));
while (i < end) {
push_byte(accum, s.(i));
i += 1u;
}
ret accum;