CODEWITHSUNDEEP
kotlin
Fortage
Fortage

Reputation: 15

How to write this java code without java.util.stream library on kotlin?

var validPushes: MutableList<Push> = IntStream.range(0, pushQuantity).mapToObj { inx -> readPush()}
              .filter { push  -> processor.validatePush(push, state)}
              .collect(Collectors.toList());

How to write this java code without java.util.stream library? I could not find an analog to mapToObj. map does not fit, because I need to cast it to Obj. Collectros replaced by asSequense

Upvotes: 0

Views: 95

Answers (1)

marstran
marstran

Reputation: 28036

You can use a range to do the counting. You can convert the range to a sequence in order to keep the lazy nature of your Stream.

val validPushes = (0 until pushQuantity)
    .asSequence()
    .map { readPush() }
    .filter { processor.validatePush(it, state) }
    .toMutableList()

Upvotes: 1

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