ArrayPrimitive.md

Pattern: Use of Array<Primitive>

Issue: -

Description

Using Array<Primitive> leads to implicit boxing and performance hit. Prefer using Kotlin specialized Array Instances.

As stated in the documention, Kotlin has specialized arrays to represent primitive types without boxing overhead, such as IntArray, ByteArray and so on.

Example of incorrect code:

fun function(array: Array<Int>) { }

fun returningFunction(): Array<Double> { }

Example of correct code:

fun function(array: IntArray) { }

fun returningFunction(): DoubleArray { }

Further Reading

• Detekt - ArrayPrimitive