Programming in Kotlin: Fundamentals

Aug 9 2022 · Kotlin 1.6, Android 12, IntelliJ IDEA CE 2022.1.3

Part 1: Use Data Types & Operations

06. Combine Logical Operators

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Previous episode: 05. Challenge: Booleans Next episode: 07. Branch with If Expressions & Scopes

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In the previous set of episodes, you saw how you can work with Boolean values, and how you could use comparison operators such as less than, greater than, equal to and not equal to, to compare values to each other.

val passingGrade = 50
val studentGrade = 50
val chrisGrade = 49
val samGrade = 99
val studentPassed = studentGrade >= passingGrade
val chrisPassed = chrisGrade >= passingGrade
val samPassed = samGrade >= passingGrade
println(!samPassed)
println(!chrisPassed)
println(chrisPassed == false)
val catName = "Jaspurr"
println(!catName)
// val catName = "Jaspurr"
// println(!catName)
// AND Operator
// &&
val bothPassed = chrisPassed && samPassed
println(bothPassed)

Demo 2

The OR operator is two vertical lines, or pipes like this:

// OR Operator
// ||
val eitherPassed = chrisPassed || samPassed
println(eitherPassed)
val anyonePassed = chrisPassed || samPassed || studentPassed
println(anyonePassed)
val everyonePassed = chrisPassed && samPassed && studentPassed
println(everyonePassed)
val meritAwardGrade = 90
val samHasPerfectAttendance = true
val samIsMeritStudent = samHasPerfectAttendance && samGrade > meritAwardGrade
println(samIsMeritStudent)