Swift - use of unresolved identifier NSExpression

Asked Feb 23 '18 at 02:45

Active Feb 23 '18 at 04:55

Viewed 326 times

I tried the below code on https://iswift.org/playground, but it says use of unresolved identifier NSExpression. Please let me know if I am missing something.

var numericExpression = "4 + 3 - 2"    
let expression = NSExpression(format: numericExpression)     
var result = expression.expressionValueWithObject(nil, context:nil)    
return result

edited Feb 23 '18 at 04:55

swinn

asked Feb 23 '18 at 02:45

Gunjan Goel

Did you import Foundation. – rmaddy Feb 23 '18 at 02:46
Yes i tried. It says import is not allowed in sandbox – Gunjan Goel Feb 23 '18 at 02:52
Not related to your issue but Swift 3 or later should be `expression.expressionValue(with: nil, context: nil)` – Leo Dabus Feb 23 '18 at 02:58

Swift - use of unresolved identifier NSExpression

0 Answers0