The docs claim that `String::push_str` is better than `String::add` because `String::add` allocates a new string and drops the old one, but this is not true. In fact, `add` reuses the existing string and grows it only if its capacity is exceeded, exactly like `push_str`. Their performance is identical since `add` is just a wrapper for `push_str`:
```
fn add(mut self, other: &str) -> String {
self.push_str(other);
self
}
```
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| src | ||
| Cargo.toml | ||
| README.md | ||