Dart cheat-sheet for Kotlin (Android) developers

This post is my effort to provide my fellow Kotlin developers a hand to pick up on Dart. Idea is to provide equivalent solution in both languages. The demonstrated code is not the only solution for a particular problem, but just one way of doing things. Style of article is to perform a task in both languages. For example, print "Hello World!" in Kotlin and Dart.

I've used Kotlin Playground and DartPad to run and play around with languages.

Task: Print "Hello World"

Kotlin:

fun main() {
  println("Hello World")
}

Output:

Hello World

Dart:

void main() {
  print("Hello World");
}

Output:

Hello World

Task: How to delete duplicates in a List

Kotlin:

fun main() {
  var myList = listOf('A', 'A', 'B', 'C', 'A', 'D', 'B', 'C')
  myList = myList.distinct()
  print(myList)
}

Output:

[A, B, C, D]

Another way in Kotlin. Note usage of arrayOf() instead listOf.

fun main() {
  val myList = arrayOf('A', 'A', 'B', 'C', 'A', 'D', 'B', 'C')
  val noDupsList = myList.distinct()
  print(noDupsList)
}

Output:

[A, B, C, D]

Dart:

//Delete duplicates from myList
void main() {
  var myList = ['A', 'A', 'B', 'C', 'A', 'D', 'B', 'C'];
  myList = Set.of(myList).toList();
  print(myList);
}

Output:

[A, B, C, D]

Task:

Kotlin:

Output:

Dart:

Output:

Task:

Kotlin:

Output:

Dart:

Output:

Happy coding :)

Useful Links

1. Kotlin Playground
2. DartPad

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