How to create empty list in CTL2

mukunku

• November 08, 2019 00:00

• Answered

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Currently I have the following CTL script:

function integer transform() {
	string[] emptyList;
	string[] myList1 = nvl($in.0.MyList1, emptyList);
	string[] myList2 = nvl($in.0.MyList2, emptyList);
	string[] myList3 = nvl($in.0.MyList3, emptyList);
	string[] myList4 = nvl($in.0.MyList4, emptyList);
	string[] myList5 = nvl($in.0.MyList5, emptyList);
	
	return ALL;
}

Is there a more elegant way of instantiating an empty list besides declaring a dummy variable such as 'emptyList'?

Thanks.

• 

  Vladimir Barton

  • November 11, 2019 10:18

  0

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  Hi Mukunku,
  there are a handful of other options how to do that (see the attached graph). However, the fundamental question is why you would need to create such a list. As our documentation describes, a list is empty by default. If you could elaborate more on why you consider creating a list with several null values as a must in your use case, I will be glad to discuss it further.
  Regards,

  • listWithNulls.grf

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