---
title: NSExpression.ExpressionType.constantValue
framework: foundation
role: symbol
role_heading: Case
path: foundation/nsexpression/expressiontype-swift.enum/constantvalue
---

# NSExpression.ExpressionType.constantValue

An expression that always returns the same value.

## Declaration

```swift
case constantValue
```

## See Also

### Constants

- [NSExpression.ExpressionType.evaluatedObject](foundation/nsexpression/expressiontype-swift.enum/evaluatedobject.md)
- [NSExpression.ExpressionType.variable](foundation/nsexpression/expressiontype-swift.enum/variable.md)
- [NSExpression.ExpressionType.keyPath](foundation/nsexpression/expressiontype-swift.enum/keypath.md)
- [NSExpression.ExpressionType.function](foundation/nsexpression/expressiontype-swift.enum/function.md)
- [NSExpression.ExpressionType.unionSet](foundation/nsexpression/expressiontype-swift.enum/unionset.md)
- [NSExpression.ExpressionType.intersectSet](foundation/nsexpression/expressiontype-swift.enum/intersectset.md)
- [NSExpression.ExpressionType.minusSet](foundation/nsexpression/expressiontype-swift.enum/minusset.md)
- [NSExpression.ExpressionType.subquery](foundation/nsexpression/expressiontype-swift.enum/subquery.md)
- [NSExpression.ExpressionType.aggregate](foundation/nsexpression/expressiontype-swift.enum/aggregate.md)
- [NSExpression.ExpressionType.anyKey](foundation/nsexpression/expressiontype-swift.enum/anykey.md)
- [NSExpression.ExpressionType.block](foundation/nsexpression/expressiontype-swift.enum/block.md)
- [NSExpression.ExpressionType.conditional](foundation/nsexpression/expressiontype-swift.enum/conditional.md)