List Batching

package main

import (
	"fmt"
)

func main() {

	actions := []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
	batchSize := 3
	batches := make([][]int, 0, (len(actions)+batchSize-1)/batchSize)

	for batchSize < len(actions) {
		actions, batches = actions[batchSize:], append(batches, actions[0:batchSize:batchSize])
	}
	batches = append(batches, actions)
	fmt.Println(batches)
}