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addElementIfNotExist(arrayName, elem)
Parameters
Parameter name | Type | Required | Description |
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arrayName | array | Yes |
Array the new element is added to. | ||
elem | any | Yes |
Element to be added. Must be the same type as the array type. |
Return Type
array
Example
example 1
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Adds currentUser to the watchers array if currentUser is not already present. The routine returns a new array watchers2, so the initial array will not be modified.
example 2
Code Block |
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watchers = addElementIfNotExist(watchers, currentUser()); |
The initial array will be modified as a result of the = operator and NOT of the routine call.
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