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struct StringBuffer {
s: ~str
}
impl StringBuffer {
pub fn append(&mut self, v: &str) {
self.s.push_str(v);
}
}
fn to_str(sb: StringBuffer) -> ~str {
sb.s
}
pub fn main() {
let mut sb = StringBuffer {s: ~""};
sb.append("Hello, ");
sb.append("World!");
let str = to_str(sb);
assert_eq!(str, ~"Hello, World!");
}
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