External module "utils/async/if-then/docs/types/index.d"

Export assignment ifthenAsync

• ifthenAsync(predicate: Predicate, x: ResultFunction, y: ResultFunction, done: Callback): void

• If a predicate function returns a truthy value, invokes x; otherwise, invokes y.

  Parameters

  • predicate: Predicate

    predicate function

  • x: ResultFunction

    function to invoke if a condition is truthy

  • y: ResultFunction

    function to invoke if a condition is falsy

  • done: Callback

    callback to invoke upon completion

  Returns void

  Example

  var randu = require( `@stdlib/random/base/randu` );
  
  function predicate( clbk ) {
      setTimeout( onTimeout, 0 );
      function onTimeout() {
          clbk( null, randu() > 0.5 );
      }
  }
  
  function x( clbk ) {
      setTimeout( onTimeout, 0 );
      function onTimeout() {
          clbk( null, 1.0 );
      }
  }
  
  function y( clbk ) {
      setTimeout( onTimeout, 0 );
      function onTimeout() {
          clbk( null, -1.0 );
      }
  }
  
  function done( error, result ) {
      if ( error ) {
          throw error;
      }
      console.log( result );
  }
  ifthenAsync( predicate, x, y, done );