count

FEEL built-in function · FEEL list functions

count(list)

Returns the number of elements in the list.

Parameters

Parameter	Type	Description
list	list	the list to count

Examples

count([1, 2, 3])

3 Try it ↑

count([])

0 Try it ↑

Edge cases and null handling

count([1, null])

2 Try it ↑

Null elements are counted.

count([[1, 2], 3])

2 Try it ↑

A nested list counts as one 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

sum · list contains

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