rust what does the double colon mean?
In Rust, the double colon (::
) is used to access items within modules, such as functions, structs, or enums. It is also used to access associated functions and associated types of traits.
For example, to call a function foo
that is defined within a module bar
, you would use the double colon like this: bar::foo()
.
Similarly, to access an associated function baz
of a struct Qux
, you would use the double colon like this: Qux::baz()
.
The double colon is also used to access associated types of traits. For example, if a trait Trait
has an associated type Item
, you can refer to it using the double colon like this: Trait::Item
.
Please note that the double colon is not used for method calls on instances of structs or enums. For that, you would use the dot (.
) operator.
I hope this explanation helps!