Summary

Method calls are another type of expression, very similar to function and macro calls

Sometimes in Rust, such as with method calls, we have to help the compiler know exactly what type we’re using

We can be explicit about which integral type we want by putting the type at the end of the number, e.g., 5_i32

We can stick underscores anywhere in a number literal we want, e.g., 80_000_000_u64

The negative sign operator will be applied after method calls in general, but you can use parentheses to change the order in which it’s applied, e.g., (-5_i32).abs()

The first parameter in a method declaration must be self, &self, or &mut self

You can have static methods inside an impl block, called by TypeName::method_name

You can use the special type Self inside an impl block

You can chain method calls together to build more complex expressions