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set

The set keyword declares a property setter accessor. It defines the code that runs when a computed property is assigned, allowing field-like assignment syntax backed by a method.

Syntax & Example​

struct Thermostat {
    private temp: f64,

    get target() -> f64 {
        return self.temp;
    }

    set target(value: f64) {
        self.temp = if value > 100.0 { 100.0 } else { value };
    }
}

Use Cases​

  • Validating or clamping values on assignment.
  • Triggering side effects when a property changes.
  • Pairing with get to form a full read/write computed property.