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Mobile Development Intermediate Paid

Kotlin Mobile Development

Learn Kotlin from the fundamentals to object-oriented programming, collections, null safety, functions and Android development foundations.

10 Weeks 24 Lessons Android Development Foundation
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LESSON 22

Collections and Higher-Order Functions

Learn useful Kotlin collection functions such as map, filter and forEach.

Kotlin Code

Study the example and understand each part.

KOTLIN
fun main() {

    val marks = listOf(
        45,
        67,
        82,
        91,
        38
    )


    val passed =
        marks.filter {
            it >= 50
        }


    passed.forEach {

        println(it)

    }

}

Kotlin is commonly developed using Android Studio or IntelliJ IDEA. These examples can be used as a foundation for Android application development.

Key Concept

Functions such as filter(), map() and forEach() make collection processing concise and expressive.

Expected Output / Result

67
82
91

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Quick Knowledge Check

Test your Kotlin understanding.

Which keyword creates a read-only variable in Kotlin?

Vinsoft Lab Academy

Learn Kotlin. Build Android applications.

Build a strong Kotlin foundation and continue into practical Android application development.