Regular Expressions 101

@IBActionthe literal text @IBAction (case sensitive)

\s+any whitespace character, repeated at least once

functhe literal text func (case sensitive)

\sany whitespace character

.*any character (except for line terminators), repeated any number of times

\sany whitespace character

Negative Lookahead(?!.*handleButtonAction)

.*any character (except for line terminators), repeated any number of times

handleButtonActionthe literal text handleButtonAction (case sensitive)

\sany whitespace character

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

@IBAction\s+func\s.*\s(?!.*handleButtonAction)\s

Test String
New

class Test {
    
    @IBOutlet weak var button1: UIButton!
    @IBOutlet weak var button2: UIButton!
    @IBOutlet weak var button3: UIButton!

    func handleButtonAction(with button: UIButton) {
    }

    @IBAction func button1Tapped() {
        handleButtonAction(with: button2)
    }

    @IBAction func button2Tapped() {
    }

    @IBAction func button3Tapped() {
    }

}

Regular Expression

Test StringNew

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Test String
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