Swift toString method accept all types.

Originator:konstantin.koval1
Number:rdar://17745215 Date Originated:21/72014
Status:Duplicate Resolved:Closed
Product:Developer Tools Product Version:Xcode 6 beta 3: Version 6.0 (6A254o)
Classification:Suggestion Reproducible:Always
 
func toString<T>(object: T) -> String
toString(10)
//"10"

class A {
  let a = 10
}
let a = A()
toString(a)
// "V11lldb_expr_01B (has 1 child)"

If I implement Printable protocol in class A it looks better
class A : Printable{
  let a = 10
  var description:String {
    return "A is \(a)"
  }
}
let a = A()
toString(a)
// "A is 100"

My suggestion that toString should require method to implement Printable
func toString<T : Printable>(object: T) -> String

Comments


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