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added .collect() into String from Box<str> #72688

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Merged
merged 1 commit into from
Jul 6, 2020
Merged

added .collect() into String from Box<str> #72688

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16 changes: 16 additions & 0 deletions src/liballoc/string.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1772,6 +1772,15 @@ impl FromIterator<String> for String {
}
}

#[stable(feature = "box_str2", since = "1.45.0")]
impl FromIterator<Box<str>> for String {
fn from_iter<I: IntoIterator<Item = Box<str>>>(iter: I) -> String {
let mut buf = String::new();
buf.extend(iter);
buf
}
}

#[stable(feature = "herd_cows", since = "1.19.0")]
impl<'a> FromIterator<Cow<'a, str>> for String {
fn from_iter<I: IntoIterator<Item = Cow<'a, str>>>(iter: I) -> String {
Expand Down Expand Up @@ -1815,6 +1824,13 @@ impl<'a> Extend<&'a str> for String {
}
}

#[stable(feature = "box_str2", since = "1.45.0")]
impl Extend<Box<str>> for String {
fn extend<I: IntoIterator<Item = Box<str>>>(&mut self, iter: I) {
iter.into_iter().for_each(move |s| self.push_str(&s));
}
}

#[stable(feature = "extend_string", since = "1.4.0")]
impl Extend<String> for String {
fn extend<I: IntoIterator<Item = String>>(&mut self, iter: I) {
Expand Down