type: fhirpath-operatoroperator: andcategory: Boolean Logicsection: 6.5.1source: fhirpath/operations.json

FHIRPath Operator: and (and)

Returns true if both operands evaluate to true, false if either operand evaluates to false, and the empty collection ({ }) otherwise.

and	true	false	empty
true	`true`	`false`	empty (`{ }`)
false	`false`	`false`	`false`
empty	empty (`{ }`)	`false`	empty (`{ }`)
{:.grid}

## Summary

Category: Boolean Logic
Section: 6.5.1
Left Argument: Boolean
Right Argument: Boolean
Return Type: Boolean
Empty Input Result: empty
Errors on Multiple Input: false

Description

Returns true if both operands evaluate to true, false if either operand evaluates to false, and empty collection otherwise. Uses three-valued logic to propagate empty operands.

Type Mapping

Boolean-Boolean