Kotlin Sequences: Evaluated on Demand Keep the Natural Order of Operations

Code

fun main() = runBlocking {
  sequenceOf(1, 2, 3)
    .filter { out.printBlue("F:$it, "); it % 2 == 1 }
    .map { out.printGreen("M:$it, "); it.toString() + "a"}
    .forEach { out.print("E:$it, ") }
}

Command to reproduce:

gt.sandbox.checkout.commit 8b58878d5aa38a9ea4e1 \
&& cd "${GT_SANDBOX_REPO}" \
&& cmd.run.announce "./gradlew run --quiet"

Recorded output of command:

F:1, M:1, E:1a, F:2, F:3, M:3, E:3a, 

Related

• VS: Evaluated Fully per Operation

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Backlinks

• Kotlin Sequences: Evaluated on Demand