geoand’s gists

## istio-java-api-48
/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/bin/java -ea -Didea.test.cyclic.buffer.size=1048576 -javaagent:/home/gandrian/software/IntelliJ/idea-IU-183.2153.8/lib/idea_rt.jar=35895:/home/gandrian/software/IntelliJ/idea-IU-183.2153.8/bin -Dfile.encoding=UTF-8 -classpath /home/gandrian/software/IntelliJ/idea-IU-183.2153.8/lib/idea_rt.jar:/home/gandrian/software/IntelliJ/idea-IU-183.2153.8/plugins/junit/lib/junit-rt.jar:/home/gandrian/software/IntelliJ/idea-IU-183.2153.8/plugins/junit/lib/junit5-rt.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/charsets.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/ext/cldrdata.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/ext/dnsns.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/ext/jaccess.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/ext/localedata.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/lib/ext/nashorn.jar:/home/gandrian/.sdkman/candidates/java/8.0.181-zulu/jre/

## simple pom
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.example</groupId>
  <artifactId>indy-maven-generate-repo-test</artifactId>
  <version>1.0-SNAPSHOT</version>


## ocp-3.10-failure-inventory
```
[OSEv3:children]
masters
nodes
etcd

[OSEv3:vars]
ansible_user=root

public_ip_address=192.168.99.50

## ocp-3.10-failure
ASK [openshift_node : Ensure old system path is set] ****************************************************************************************************************************************************************************
changed: [192.168.99.50] => (item=/etc/origin/openvswitch)
changed: [192.168.99.50] => (item=/var/lib/kubelet)
changed: [192.168.99.50] => (item=/opt/cni/bin)

TASK [openshift_node : Pre-pull node system container image] *********************************************************************************************************************************************************************
fatal: [192.168.99.50]: FAILED! => {"msg": "The conditional check ''Pulling layer' in pull_result.stdout' failed. The error was: error while evaluating conditional ('Pulling layer' in pull_result.stdout): Unable to look up a name or access an attribute in template string ({% if 'Pulling layer' in pull_result.stdout %} True {% else %} False {% endif %}).\nMake sure your variable name does not contain invalid

## gist:85eb614336c77a8a3c4d57efb5a6d4e5
product:
  name: spring-boot
  abbreviation: spring-boot
  stage: GA
  issueTrackerUrl: http://issues.jboss.org/browse/SB
version: 1.5.10
milestone: DR20180330
group: spring-boot-1.5-all
defaultBuildParameters:
  environmentId: 1

## default istio-inject configmap
apiVersion: v1
data:
  config: |
    policy: enabled
    template: |-
      initContainers:
      - name: istio-init
        image: docker.io/istio/proxy_init:0.6.0
        args:
        - "-p"

## openshift-3.7.ansible-rpm-error

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] *********************************************************************************************************

## introrx.md

      
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              geoand
            / introrx.md
          
          
            Created Jul 28, 2016
              — forked from staltz/introrx.md
          
          
            The introduction to Reactive Programming you've been missing
          
        
      View introrx.md
  
    
    The introduction to Reactive Programming you've been missing
(by @andrestaltz)

This tutorial as a series of videos
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.


## Kotlin List.collate
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

## Kotlin Iterable.countBy extension
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)
    }
}