iOS Talk - Advance Debugging

Advance Debugging example with Pythagorean Theorem

Here the pdf with the presentation

Screenshot

Bugs to fix

• aButton and bButton position
• aLabel value
• Remove hardcoded line self.bValue = 1
• calculateHypotenuse() params

Alias Used

Save it in ~/.lldbinit

• command alias -h "Same as 'expression'" -- expr expression

• command alias -h "Same as 'expression'" -- e expression

• command alias -h "Refresh screen device to see the visual changes" -- flush expression -l objc -O -- [CATransaction flush]

• command alias -h "Refresh screen device to see the visual changes" -- fl expression -l objc -O -- [CATransaction flush]

• command alias -h "Same as 'po' but for swift with objc syntax" -- poc expression -l objc -O --

Commands resume

• poc [self.view recursiveDescription]

• expression aButton.frame = CGRect(x: 10, y: 10, width: 100, height: 40)

• expression button.backgroundColor = .red

• expression -l objc -O -- [CATransaction flush]

• expression aLabel?.text = String(format: "a = %.0f", aValue!)

• thread jump --by 1