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Apple App Development with Swift Certified User Sample Questions:

1. You need to create a Watchpoint in Xcode. In which order should you complete the actions? Move all the actions to the answer area and place them in the correct order.

2. Review the code snippet.

Which statement completes the code snippet so that:
* The lastReleaseDate remains the same when nextApplePhone.releaseDate is nil.
* The lastReleaseDate updates to the nextApplePhone.releaseDate when nextApplePhone.releaseDate is NOT nil.

A) lastReleaseDate : nextApplePhone.releaseDate
B) lastReleaseDate : nextApplcPhone.rcleaseDate!
C) nextApplePhone.releaseDate : lastReleaseDate
D) nextApplePhone.releaseDate! : lastReleaseDate

3. Review the code.
var capitalCities = [ " USA " : " Washington D.C. " , " Spain " : " Madrid " , " Peru " : " Lima " ] Which two statements add the capital city of " Italy " to the dictionary? (Choose 2.)

A) capitalCities.updateValue( " Rome " , forKey: " Italy " )
B) capitalCities[ " Italy " ] = " Rome "
C) capitalCities.append([ " Italy " : " Rome " ])
D) capitalCities[ " Rome " ] = " Italy "
E) capitalCities = capitalCities + [ " Italy " : " Rome " ]

4. Review the code.

When entered into the TextField, which number will display a blue canvas on the SecondView?

A) 2
B) 4
C) 3
D) 1

5. Review the code snippet.

What is the output from each print statement?

Solutions: