is there a nice way to only take x elements from a...

# announcements

[Bernhard]

is there a nice way to only take x elements from a sequence if x >= 0, otherwise return everything? Thinking of an extension function atm

[spand]

Isnt that take ?

[Bernhard]

take checks for non negative ints

[Bernhard]

require(n >= 0) { “Requested element count $n is less than zero.” }

[spand]

Oh, I misunderstood

[Bernhard]

otherwise I’d go for something like:

private fun <T> Sequence<T>.limitIfPositive(size: Int): Sequence<T> =
    if (size >= 0) {
        this.take(size)
    } else {
        this
    }

[spand]

I cant wrap my head around that behaviour. Why do you want that as opposed to empty ?

[Bernhard]

existing API requires an integer to limit for size

[Bernhard]

I’m refactoring atm

[Bernhard]

I want the limit to optional at some point

[Bernhard]

so rather than breaking everything now by making the limit nullable I’d go for: negative limit means no limit

[Bernhard]

then at some point make limit nullable