Apple Swift Coding I - Lesson 1 - 6

Which option uses more specific names?

• dollarPerSandwich * customerCount

• numberOfDollars * numberOfPeople

Which of these is an "assignment" in programming?

• Giving a name to a particular value, such as: let numberOfSodas = 7

• Describing a programming task in a comment, such as: // TODO: Update the sharing message

• Running a calculation, such as: 4 + 6 + 9

Which line will be run?

// 10 – 8 +3

18 + 7 + 365

• The first line

• The second line

• Both

• Neither

What does it mean to "declare" something in programming?

• To write a comment that explains your calculation

• To write a hypothesis that you believe to be true

• To set a requirement on a performance measurement

• To give a name to something for the first time

Which option uses more specific names?

• calculatedSpeed < anotherSpeed

• currentSpeed <maximumSpeed

Which of these is written in "camel case"?

• FIRSTname

• first_name

• firstName

• first.name(camel)

Which of these are strings?

• “9.99”

• “100%”

• Neither

• Both A and B

Which of these are strings?

• "Happy birthday"

• 88

• Neither

• Both A & B

The second line below has a "use of unresolved identifier" error. What does that mean?

let playgroundName = "My Playground"

let welcomeMessage = "Come and play in \(playGroundName)"

• The string interpolation is done wrong; it should use a /

• You can't repeat names

• playGroundName isn't a string

• Names need to match capital and lowercase letters; it should be playgroundName

Which of these are strings?

• let myLuckyNumber = 42

• "\"Curiouser and curiouser, \ "said Alice."

• Neither

• Both A & B