What means Into in Rust?

Question

I'm reading this piece of code:

pub fn ip_addrs<T>(mut self, ip_addrs: T) -> Self
        where T: Into<ManagedSlice<'c, IpCidr>>
    {

T must be of type Into. However, I cannot understand what Into does by reading its definition. Can somebody explain?

score 2 · Accepted Answer · edited May 18 '20 at 09:09

2

From and Into are two traits specifying protocols for converting between types (without failure). That is if A implements Into<B>, you can always convert an A to a B and it will never fail.

Here it's used such that you can give this function anything which is convertible to a ManagedSlice.

edited May 18 '20 at 09:09

user2722968

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answered May 18 '20 at 05:47

Masklinn

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See also: https://stackoverflow.com/questions/29812530/when-should-i-implement-stdconvertfrom-vs-stdconvertinto – E_net4 - Krabbe mit Hüten May 18 '20 at 09:33

What means Into in Rust?

1 Answers1