CODEWITHSUNDEEP
androidkotlin
Emir Tanır
Emir Tanır

Reputation: 42

Android Studio - Kotlin Int function to string

I have summary function that have two int parameters and a booelan paramater.

Here is my function

fun sum(s1:Int, s2:Int,str:Boolean = false) : Int{
         if (str == false){
             return s1+ s2
         } else {
             return (s1 + s2).toString()
         }
    }

this function returns of s1 + s2 but i have booelan paramater, if i set it to true ,my return will be s1 +s2.toString()

but i get error in toString how can i fix it

Upvotes: 1

Views: 100

Answers (1)

Some random IT boy
Some random IT boy

Reputation: 8457

That is because the function return type is strictly an Int. You may change that to Any and it will compile fine but you won't have any type safety afterwards.

As far as I know kotlin doesn't have union types as other languages do like Typescript where you could do something like:

sum(a: number, b: number, str: boolean = false): number | string {
     if (str == false){
          return s1+ s2
     } else {
          return (s1 + s2).toString()
     }
}

Upvotes: 2

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