CODEWITHSUNDEEP
iosswiftfunction
noak
noak

Reputation: 3

How do I use a variable outside of the function it was created in

I am trying to figure out how I can use a variable outside of the function it was created in without using return. Example:

import UIKit
var Finalvar = "test"
func test(var1: String) {
    var Finalvar = var1

}
test(var1: "Done")
print(Finalvar)

as output I get "test" instead of "done", how can I change that?

Upvotes: 0

Views: 90

Answers (2)

vadian
vadian

Reputation: 285270

Finalvar is not Finalvar

The global variable Finalvar and the local variable Finalvar are two different objects.

If you declare a local variable with the same name as a global variable the global variable is hidden.

Remove the var keyword in the function

var finalVar = "test"

func test(var1: String) {
    finalVar = var1

}
test(var1: "Done")
print(finalVar)

In a class or struct you can use self to indicate to access the property.

self.finalVar = var1

Note : Variable (and function) names are supposed to start with a lowercase letter.

Upvotes: 2

AlexWoe
AlexWoe

Reputation: 854

You are declaring a new Finalvaragain in your func test(), just leave out the declaration out in your function. The code below should work:

import UIKit
var finalVar = "test"
func test(var1: String) {
   finalVar = var1

}
test(var1: "Done")
print(finalVar)

One additional important thing -> please begin your variables with lowercase instead of a capital letter

Upvotes: 2

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