error unknown-method

What it means#

The method is not declared in an impl of the type, is not promoted from an embedded type (§4.7), and is not a default method of an interface the type satisfies (§4.6).

Example#

data User { name: str }

fn main() {
  let u = User{ name: "Ann" }
  u.greet()      // <- unknown-method
}

unknown-method

How to fix#

data User { name: str }

impl User {
  fn greet() -> str => "Hello, {name}"
}

fn main() {
  let u = User{ name: "Ann" }
  print(u.greet())
}

Declare the method in an impl block, or call an existing one.

See also#

• unknown-field
• interface-not-satisfied
• not-callable