how do I instantiate an iterator in kotlin every iterator is kotlinlang #getting-started

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Hullaballoonatic

09/11/2018, 9:54 PM

how do I instantiate an iterator in kotlin? every iterator is an interface

Andreas Sinz

09/11/2018, 9:55 PM

That sounds like an XY Problem. What are you trying to achieve?

Hullaballoonatic

09/11/2018, 9:56 PM

draw a line between every point in a list of points

Nikky

09/11/2018, 9:57 PM

that sounds like you always want to process one point with the next

Hullaballoonatic

09/11/2018, 9:57 PM

so from it to it.next() presumbaly. i could do like...

for (point in 0 until points.size -1)

and just use

points[point]

and

points[point+1]

but i figured kotlin has a more elegant solution

Nikky

09/11/2018, 10:00 PM

^ that.. i knew there was a thing for this, in other cases maybe fold would have been useful too

Andreas Sinz

09/11/2018, 10:00 PM

then use windowed (https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/windowed.html) with size of 2 and step of 1

Hullaballoonatic

09/11/2018, 10:00 PM

looks like it was deleted? because

CharSequence

beautiful, thank you

Andreas Sinz

09/11/2018, 10:01 PM

yep, at first i posted the wrong one of

CharSequence

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