onBoth (method)

onBoth

• onBoth(_onSome, onNone): Opt<T>

• Calls appropriate callback and returns without change current instance of Opt.

  Parameters

  • _onSome: ((x) => void)

    • • (x): void

      • Parameters

        • x: T

        Returns void

  • onNone: (() => void)

    • • (): void

      • Returns void

  Returns Opt<T>

  Example

  // prints 1, returns some(1)
  some(1).onBoth(x => console.log(x), () => console.log('none'))
  
  // prints "none", returns none
  none.onBoth(x => console.log(x), () => console.log('none'))
  

  See

  • Opt.caseOf for functional version
  • onBoth

  Imperative