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rustself

What is the meaning of `use path::{self}`?

I recently read the following line of code: 

use fmt::{self, Debug};

What does the self keyword in the above statement mean?

Solution

  • Using self in that context allows you to bind a module plus some of it's child elements into the current scope with a single use statement.

    Without self:

    use a::b::{c,d};
// Now you can refer to a::b::c as c and a::b::d as d
// but if you need to refer to a::b as a::b

    With self:

    use a::b::{self, c, d};
// Now b refers to a::b as well