all

FEEL built-in function · FEEL list functions

all(list) or all(b1, …, bN)

Returns true if every element is true, false if any element is false, and null otherwise. all([]) is true.

all uses three-valued logic. A single false makes the result false, even if there are nulls. Otherwise any null makes it null. Elements that are not booleans also give null.

Parameters

Parameter	Type	Description
list	list of booleans	booleans, as one list or as separate arguments

Examples

all([true, true])

true Try it ↑

all([true, false])

false Try it ↑

all([])

true Try it ↑

Edge cases and null handling

all([true, null])

null Try it ↑

all([false, null])

false Try it ↑

False wins over null.

all([1])

null Try it ↑

Non-boolean elements give null.

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

any

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