append

FEEL built-in function · FEEL list functions

append(list, item…)

Returns a new list with the items added to the end.

Parameters

Parameter	Type	Description
list	list	the source list
item	any	one or more values to add at the end

Examples

append([1], 2, 3)

[1, 2, 3] Try it ↑

Edge cases and null handling

append([1], [2])

[1, [2]] Try it ↑

A list argument is added as one nested element. Use concatenate to join lists.

append([1], null)

[1, null] Try it ↑

Null is a valid element.

Part of FEEL list functions: how positions, nulls and single values behave across all of them, aggregating over lists of contexts, and every function side by side.

Related functions

insert before · concatenate

Defined by the OMG DMN 1.6 specification, chapter 10.3.4 (built-in functions).