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public

The public keyword is the most permissive visibility modifier. A public member is visible to all callers, including code outside the declaring type or module.

Syntax & Example​

struct Counter {
    private count: i64,

    pub fn increment() {
        self.count += 1;
    }

    pub fn value(): i64 {
        return self.count;
    }
}

Use Cases​

  • Exposing a type's API to external callers.
  • Publishing methods that form the public surface of a module.
  • Pairing with private fields to keep state internal while exposing behavior.

See also: private, protected.