Pattern: Missing use of sequence
Issue: -
Long chains of collection operations will have a performance penalty due to a new list being created for each call. Consider using sequences instead.
Example of incorrect code:
listOf(1, 2, 3, 4).map { it*2 }.filter { it < 4 }.map { it*it }Example of correct code:
listOf(1, 2, 3, 4).asSequence().map { it*2 }.filter { it < 4 }.map { it*it }.toList()
listOf(1, 2, 3, 4).map { it*2 }