Compose Camp - Session 2 Quiz

Which of the following conditions are satisfied when x = 5?

• x == 5

• x % 5

• x is Int

• x in 1..5

Which are the four visibility modifiers in Kotlin?

• public, private, protected, abstract

• public, private, protected, internal

• public, private, protected, external

• public, private, internal, static

Which of the following is best represented by a nullable type?

• The number of followers (0 or more) in a social media app.

• An optional profile picture.

• A username that must be at least one character.

• A unique ID given to every user.

Which is NOT true of functions in Kotlin?

• A function has a data type, such as (Int) -> Unit.

• A function can take another function as a parameter.

• A function can be returned from another function.

• A function can be changed to another data type, and vice versa.

Use a(n) ___ Composable to display an image

• Button

• Text

• Icon

• Image

Alignment.Center centers UI components both horizontally and vertically.

• True

• False

Jetpack Compose runs your composables for the first time, during ___ it will keep track of the composables that you call to describe your UI.

• Initial composition

• Recomposition

• State change

• App termination

Composable functions can store an object in memory using the ___ composable delegate

• remember

• Column

• Modifier

• @Composable

The ___ composable places its children in a vertical sequence.

• Column

• Row

• Box

• Modifier

The ___ operator allows you to call a method only if the object is non-null.

• !!.

• ?.

• ?:

• .