chainToOpt (method)

chainToOpt

• chainToOpt<U>(f): OptSafe<U>

• Combination of Opt.flatMap and opt functions.

  Type Parameters

  • U

  Parameters

  • f: ((_) => undefined | null | U)

    • • (_): undefined | null | U

      • Parameters

        • _: T

        Returns undefined | null | U

  Returns OptSafe<U>

  Example

  some(1).chainToOpt(x => x === 1 ? null : x + 1) // None
  some(2).chainToOpt(x => x === 1 ? null : x + 1) // Some(3)
  

  See

  chainToOpt