(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
@Grapes( | |
@Grab(group='com.google.guava', module='guava', version='18.0') | |
) | |
import static com.google.common.collect.Sets.* | |
def first = ['a', 'b', 'c'] as Set | |
def second = ['b', 'c', 'd', 'e'] as Set |
tshark -c 50 -NnNC -E header=y -Tfields -e col.Protocol -e ip.dst -e ip.dst_host -e tcp.dstport -e udp.dstport -f "host $(hostname --ip-address) and (tcp or udp) and not (port 53)" |
def list = [1,4,9] | |
println subsets(list) | |
List<List<Integer>> subsets(List<Integer> list) { | |
if(!list) { | |
return [[]] | |
} | |
final List<List> directSubs = list.tail().collect { |
tailrec fun <T : Comparable<T>> binarySearch(list: List<T>, item: T, startIndex: Int = 0, endIndex: Int = list.size - 1): Int { | |
if (endIndex < startIndex ) { | |
return -1 | |
} else if (startIndex == endIndex) { | |
return if (item == list[startIndex]) startIndex else -1 | |
} else if (endIndex == startIndex + 1) { | |
if (list[startIndex] == item) { | |
return startIndex | |
} | |
else if(list[endIndex] == item) { |
import groovy.transform.TailRecursive | |
import groovy.transform.ToString | |
@ToString(includePackage = false) | |
class Node<T> { | |
T data | |
List<Node<T>> nodes = [] | |
} | |
final builder = new ObjectGraphBuilder(classLoader: getClass().classLoader) |
/** | |
* Method extension code | |
*/ | |
fun <T1, T2> Collection<T1>.combine(other: Iterable<T2>): List<Pair<T1, T2>> { | |
return combine(other, {thisItem: T1, otherItem: T2 -> Pair(thisItem, otherItem) }) | |
} | |
fun <T1, T2, R> Collection<T1>.combine(other: Iterable<T2>, transformer: (thisItem: T1, otherItem:T2) -> R): List<R> { | |
return this.flatMap { thisItem -> other.map { otherItem -> transformer(thisItem, otherItem) }} |
fun <T, M> Iterable<T>.countBy(transformer: (T) -> M) : Map<M, Int> { | |
val emptyMap = mapOf<M, Int>() | |
return this.fold(emptyMap) {accumulator, item -> | |
val transformedItem = transformer(item) | |
accumulator + Pair(transformedItem, accumulator.getOrElse(transformedItem, {0}) + 1) | |
} | |
} |
fun <T> List<T>.collate(size: Int, step: Int = size): List<List<T>> { | |
require(size >= 0) {"size must not be negative"} | |
require(step <= size) {"step must be at most equal to size"} | |
return collateRec(this, size, step, listOf()) | |
} | |
private tailrec fun <T> collateRec(list : List<T>, size: Int, step: Int, accumulator: List<List<T>>) : List<List<T>> { | |
if(list.isEmpty()) { | |
return accumulator |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
PLAY [Create initial host groups for localhost] ******************************************************************************************** | |
TASK [include_vars] ************************************************************************************************************************ | |
ok: [localhost] | |
PLAY [Initialization Checkpoint Start] ***************************************************************************************************** | |
skipping: no hosts matched | |
PLAY [Populate config host groups] ********************************************************************************************************* |