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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:

Apple App Development with Swift Certified User Sample Questions:

Question 1

For each statement about Navigation in SwiftUI. select True or False.

Question 2

Review the code snippet.

The code snippet does not compile.
Which two actions will fix the errors? (Choose 2.)

A. Chang the type of unitPrice from Double to Int.
B. Change the type of quantity from int to Double .
C. Change shipping from let to var to make it mutable.
D. Change totalCost from let to var to make it mutable.
E. Change the initial value of totalCost from o to 0.0.

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

Question 4

Why does the initializer for the following struct need the keyword self?

A. self is used to indicate to the reader that the parameter is being referenced.
B. self is always needed when you are setting properties in an initializer.
C. self is only needed when the property does not have a default value.
D. self is needed to distinguish between the property and the parameter with the same name.

Question 5

Review the code snippet.

What is the output from each print statement?

Solutions: