Calling trait static method from another static method (rust)

Question

Can you call a trait static method implemented by types from another trait static method implemented in the trait? For example:

trait SqlTable {
  fn table_         


        

Answer 1

• Yes, you can call a trait static method [implemented by types] from another trait static method [implemented in the trait].
• Static methods are always called on a trait like SomeTrait::some_method().
• Where there is no Self or self in [a trait] function signature, it is not callable at present. The standard workaround until UFCS comes is to take an argument _: Option<Self> and pass it None::<T>.

See original question for code that (as of today) compiles.

Answer 2

You have to change Self to SqlTable:

trait SqlTable {
  fn table_name() -> String;

  fn load(id: i32) -> Self {
    ...
    SqlTable::table_name()    // <-- this is not right
    ...
  }
}

Static methods are always called on a trait like SomeTrait::some_method(). Bug #6894 covers this issue.