The arrayToString task returns a string representing the contents of a given array. Each array element is separated by a comma in the string representation. The task returns null if the array is empty.
If a recent query into a ticketing database has populated an array with open ticket numbers, you could use this task to convert the array and send an email containing a comma-separated list of those ticket numbers.
The input variable (arr) is shown in Task History (accessed from Jobs in Operations Manager).
The return variable shows each element in the array separated by a comma. In this example, no spacer variable was set, so no white space is included.
