CODEWITHSUNDEEP
swiftmacos
An Ottomatic Cat
An Ottomatic Cat

Reputation: 23

Unresolved Identifier (variable) in different IBActions

So, I was creating a converting app and I needed to use 2 IBActions. In one of them I made a constant and I tried to use it in the next one. But it doesn't work. How can I share the constant?

I am running Xcode 11. I have tried converting it into a variable but no success.

@IBAction func select(_ sender: Any) {
    let foo = "/some/cool/path.txt"
}

@IBAction func convert(_ sender: Any) {
    let contents = try NSString(contentsOfFile: foo, encoding: NSUTF8StringEncoding) // And here comes the error
}

I wanted to use the foo constant in other IBAction but I am getting the Unresolved Identifier "foo".

Upvotes: 2

Views: 36

Answers (1)

vadian
vadian

Reputation: 285079

Rule: All variables are only visible within the pair of braces they are declared in.

Declare the variable one level higher, and don't use NSString in Swift

var foo = ""

@IBAction func select(_ sender: Any) {
    foo = "/some/cool/path.txt"
}

@IBAction func convert(_ sender: Any) {
    do {
        let contents = try String(contentsOfFile: foo, encoding: .utf8)
    } catch { print(error) } 
}

Upvotes: 2

Related Questions