FHIRPath Function: allFalse

Takes a collection of Boolean values and returns true if all the items are false. If any items are true, the result is false. If the input is empty ({ }), the result is true.

The following example returns true if none of the components of the Observation have a value greater than 90 mm[Hg]:

Observation.select(component.value > 90 'mm[Hg]').allFalse()

Summary

• Category: Existence
• Section: 5.1.6
• Return Type: Boolean
• Empty Input Result: true
• Errors on Multiple Input: false

Description

Takes a collection of Boolean values and returns true if all the items are false. If any items are true, the result is false.

Arguments

• none

Type Mapping

• Boolean-Boolean

Example

Observation.select(component.value > 90 'mm[Hg]').allFalse()