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rust-play/playground.rs

Created January 24, 2020 13:33
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Code shared from the Rust Playground
Raw
playground.rs
fn identity<T: ?Sized, F>(f: F) -> F
where
F: for<'a> Fn(&'a T) -> &'a T,
{
f
}
fn foo(_f: impl for<'a> Fn(&'a str) -> &'a str) {}
fn main() {
let closure = identity(|s: &str| s);
foo(closure);
}
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