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Kotlin – Sort List of custom Objects

In this tutorial, I will show you several useful ways to sort List of custom Objects for Ascending and Descending order in Kotlin. You’re gonna know how to:

  • sort List of Objects by one field or multiple fields
  • use your custom Comparator to sort List of Objects
  • implement Comparable interface to make sorting List of Objects more convenient

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Kotlin List & Mutable List tutorial with examples
Kotlin – Compare Objects with Comparable Example

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Kotlin sum(), sumBy(), sumByDouble() and BigDecimal in List, Map example

In this Kotlin tutorial, I will show you some examples that uses sum(), sumBy(), sumByDouble() for List, Map. We’re gonna create sum() & sumByBigDecimal() which also work for List of BigDecimal objects.

Related Posts:
Kotlin List & Mutable List tutorial with examples
How to work with Kotlin HashMap
Kotlin Fold Example: fold(), foldRight(), foldIndexed(), foldRightIndexed()
Kotlin groupBy(), groupingBy() example

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