Dear rust devs,
let vec = vec![("a".to_string(), "b".to_string())];
for &(ref a, ref b) in vec.iter() {
println!("{}: {}", a, b);
}
I understand that the '&' and 'ref' are needed here, because otherwise
the 'String' could be moved out of the 'Vec'.
I don't quite understand, why there's the need for these explicit refs,
why isn't the outer '&' enough to indicate that everything inside of
the pattern is also referenced?
Why isn't it possible to just have (with the same semantics):
for &(a, b) in vec.iter() {
println!("{}: {}", a, b);
}
Without these refs pattern matching would be aesthetically more in sync
with the types, which I would consider very pleasing.
Greetings,
Daniel
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