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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

unique identifier

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: