Kotlin
Kotlin
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Idioms

Idioms

A collection of random and frequently used idioms in Kotlin. If you have a favorite idiom, contribute it. Do a pull request.

Creating DTOs (POJOs/POCOs)

data class Customer(val name: String, val email: String)

provides a Customer class with the following functionality:

  • getters (and setters in case of vars) for all properties
  • equals()
  • hashCode()
  • toString()
  • copy()
  • component1(), component2(), …, for all properties (see Data classes)

Default values for function parameters

fun foo(a: Int = 0, b: String = "") { ... }

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