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Size: a a a
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АГ
fn foo<T, E: PartialEq>(cb: impl Fn(…) -> Result<T, E>, err: E) -> … {
match cb(…) {
Err(err) => …,
Ok(r) => …
}
}
um MyError {ак?
Str(String),
Num(i32),
}
foo(|…| {…}, MyError::Str)
Т
SH