FHIRPath Operator: != (not-equals)

The converse of the equals operator, returning true if equal returns false; false if equal returns true; and empty ({ }) if equal returns empty. In other words, A != B{:.fhirpath} is short-hand for (A = B).not(){:.fhirpath}.

Summary

• Category: Equality
• Section: 6.1.3
• Left Argument: Any
• Right Argument: Any
• Return Type: Boolean
• Empty Input Result: empty
• Errors on Multiple Input: false

Description

The converse of the equals operator, returning true if equal returns false; false if equal returns true; and empty ({ }) if equal returns empty. Equivalent to (A = B).not().

Type Mapping

• String-String
• Integer-Integer
• Decimal-Decimal
• Integer-Decimal
• Decimal-Integer
• Boolean-Boolean
• Date-Date
• DateTime-DateTime
• Time-Time
• Quantity-Quantity
• Complex-Complex