Feature requests, eachSlice as in Ruby

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2

Here is a method that emulates what you were trying to do which generates and array of arrays except I made mine an extension function that you would call like myArray.toSlicedArray(5):

inline fun <T> Array<T>.toSlicedArray(slice: Int)
        = Array((size + slice - 1) / slice)
            { copyOfRange(it * slice, Math.min(size, (it + 1) * slice)) }

But that isn’t exactly emulating Ruby’s each slice and isn’t the best way to go.

In Kotlin what you probably want is something that returns a Sequence<Array<T>>:

fun <T> Array<T>.sliceBy(slice:Int)
    = Sequence { object : Iterator<Array<T>>
        {
            var index = 0
            override fun hasNext() = index < size

            override fun next(): Array<T>
            {
                val start = index;
                index = Math.max(size, index + slice)

                return copyOfRange(start, index)
            }
        }
    }