Get Array Element Operator [ ]

Syntax	NONE `anArray[anIndex]`
Semantics	The operator `[i]` returns the i-th element of the array. The first element has the position 0. `anIndex` can be a static integer literal, an object of type Integer, or an E2E Action Language operation or expression returning an integer.
Substitutables	`anArray`	Can be any variable or object attribute having the type Array.
	`anIndex`	Can be any expression that evaluates to an integer.
	It is not possible to use class operations as index function – only built-in E2E Action Language operations are allowed.
Examples	NONE `set arrayElement = inputContainer.myList[0]; set arrayElement = anArray[anArray.count() - 1].mySubList; set arrayElement = anArray[indexVariable];`

Example File (Builder project E2E Action Language/Array):

<your example path>\E2E Action Language\Array\uml\arrayGetElement.xml

Consider the example being displayed below. InputContainer is an object that contains an array of type String. This array is named myList and can have zero to n elements. You can select a specific element of an array by using its index. The indices start at 0. To get a reference of the first myList item, the following statement is used:

CODE

set arrayElement1 = inputContainer.myList[0];

In an activity diagram, this looks like shown below.

Figure: Using the[ ]-Operator: A Simple Example

The index number can be a static integer literal, an object of type Integer or an E2E Action Language operation or expression returning an integer. The following activity diagram illustrates some of the more complicated cases:

Figure: Using the[ ]-Operator: A Complex Example