Mendix 9 Client Documentation: Module: mendix/lang

A collection of language helpers.

Methods

(static) collect(chain, callbacknullable, scopenullable)

Executes a chain of functions in parallel. It is used where several asynchronous calls are not interdependent but do share a blocking condition.

The functions in chain should each accept an empty callback function as their first and only parameter and invoke this callback on completion.

Parameters:

Name	Type	Attributes	Description
`chain`	Array.<module:mendix/lang~ChainCallback>		array of functions to execute in parallel
`callback`	function	<nullable>	function to execute at the end of the chain
`scope`	Object	<nullable>	object in which scope to execute the functions in

Example

lang.collect([
  function(callback) {
    setTimeout(callback, 100); // async
  },
  function(callback) {
    setTimeout(callback, 100); // async
  },
  function(callback) {
    setTimeout(callback, 100); // async
  }
], function() {
  console.log("Completed");
}, this);

(static) getUniqueId() → {string}

Returns a unique identifier

Returns:

unique identifier

Type: string

(static) sequence(chain, callbacknullable, scopenullable)

Executes a chain of functions in sequence. It is used to sequence the execution of both synchronous and asynchronous calls.

The functions in chain should each accept an empty callback function as their first and only parameter and invoke this callback on completion.

Parameters:

Name	Type	Attributes	Description
`chain`	Array.<module:mendix/lang~ChainCallback>		array of functions to execute in sequence
`callback`	function	<nullable>	function to execute at the end of the chain
`scope`	Object	<nullable>	object in which scope to execute the functions in

Example

lang.sequence([
  function(callback) {
    callback(); // sync
  },
  function(callback) {
    setTimeout(callback, 100); // async
  }
], function() {
  console.log("Completed");
}, this);

Type Definitions

ChainCallback(callback)

Callback for functions to be called in a chain.

Parameters:

Name	Type	Description
`callback`	function	invoke this function on completion

See: