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# quick way to change previous JAVA_HOME to jdk 8 version.
set -x JAVA_HOME (/usr/libexec/java_home -v 1.8)

function setjdk
   if test -n "$JAVA_HOME"
     removeFromPath "$JAVA_HOME/bin"
   end
   set -gx JAVA_HOME (/usr/libexec/java_home -v $argv[1])
   set -gx PATH $JAVA_HOME/bin $PATH  
end

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#############################################
# Push de la rama actual
git push origin $rama_actual

#############################################
# Volver a un commit anterior, descartando los cambios
git reset --HARD $SHA1

#############################################
# Ver y descargar Ramas remotas

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title	tags	authors
How to keep in sync your Git repos on GitHub, GitLab & Bitbucket easily	git github gitlab bitbucket	MoOx

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# Clean the exited containers
docker rm $(sudo docker ps -a | grep Exit | cut -d ' ' -f 1)

# Clean the untagged images (or old images)
docker rmi $(docker images | tail -n +2 | awk '$1 == "<none>" {print $'3'}')

# On Docker 1.9+ you can remove the orphan volumes with the next command
docker volume rm $(docker volume ls -qf dangling=true)

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$> brew cask install java

$> brew install kafka

$> vim ~/bin/kafka
# ~/bin/kafka
#!/bin/bash

zkServer start
kafka-server-start.sh /usr/local/etc/kafka/server.properties

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import scala.io.Source.fromFile

def parseProperties(filename: String): Map[String,String] = {
  val lines = fromFile(filename).getLines.toSeq
  val cleanLines = lines.map(_.trim).filter(!_.startsWith("#")).filter(_.contains("="))
  cleanLines.map(line => { val Array(a,b) = line.split("=",2); (a.trim, b.trim)}).toMap
}

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10 Scala One Liners to Impress Your Friends

Here are 10 one-liners which show the power of scala programming, impress your friends and woo women; ok, maybe not. However, these one liners are a good set of examples using functional programming and scala syntax you may not be familiar with. I feel there is no better way to learn than to see real examples.

Updated: June 17, 2011 - I'm amazed at the popularity of this post, glad everyone enjoyed it and to see it duplicated across so many languages. I've included some of the suggestions to shorten up some of my scala examples. Some I intentionally left longer as a way for explaining / understanding what the functions were doing, not necessarily to produce the shortest possible code; so I'll include both.

1. Multiple Each Item in a List by 2

The map function takes each element in the list and applies it to the corresponding function. In this example, we take each element and multiply it by 2. This will return a list of equivalent size, compare to o

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package com.datastax.spark.demo;

import com.datastax.driver.core.Session;
import com.datastax.spark.connector.cql.CassandraConnector;
import com.google.common.base.Optional;
import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaPairRDD;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.spark.api.java.function.FlatMapFunction;