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iosstringswiftvarunwrap

swift - Remove white spaces from var(UITextField input) doesn't work

I'm new to swift, but from ObjectiveC background, I tried to get an input from textfield into a var, on a button click.

Now, when I tried to remove blank space using "stringByTrimmingCharactersInSet" and so many other options, it's not working. Here is my code,

    var someVariable = urlInputComponent.text!
    if someVariable.containsString(" "){
        someVariable = someVariable.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
        print(someVariable)

    }

I also tried by assigning the result to a new var, 

        let trimmed: String = someVariable.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
        print(trimmed)

but still couldn't remove the whitespace. My guess is I'm confusing with the "Unwrapped value" concept, it'll be really helpful if someone could help me out. Thanks!

Solution

  • try the alternate way 

     urlInputComponent.text! = urlInputComponent.text!.stringByReplacingOccurrencesOfString(" ", withString: "")

    or else try this

    let trimmed = "".join(urlInputComponent.text!.characters.map({ $0 == " " ? "" : String($0) }))
 print (trimmed)