pchiusano

package fs2

import util.Monad
import Step._
import java.util.concurrent.atomic.AtomicLong

object diamond {

  /** 
   * Pass elements of `s` through both `f` and `g`, then combine the two resulting streams.

pchiusano

trait Applicative[F[_]] {
  
  /** 'Balanced' sequencing, to avoid SOE. */
  def bsequence[A](ms: Seq[F[A]]): F[IndexedSeq[A]] = {
    if (ms.isEmpty) point(Vector())
    else if (ms.size == 1) ms.head.map(Vector(_))
    else {
      val (l,r) = ms.toIndexedSeq.splitAt(ms.length / 2)
      apply2(bsequence(l), bsequence(r))(_ ++ _)
    }

scy

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

• From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
• That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

channingwalton

// Inspired by http://dave.fayr.am/posts/2012-10-4-finding-fizzbuzz.html
object FizzBuzz extends App {
  import scalaz._
  import Scalaz._

  def fizzbuzz(i: Int) = ((i % 3 == 0) option "fizz") |+| ((i % 5 == 0) option "buzz") | i.shows 
  
  for (i <- 1 to 100) {println(i + " " + fizzbuzz(i))}
}

eleclerc

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>name</key>
	<string>Solarized (dark)</string>
	<key>settings</key>
	<array>
		<dict>
			<key>settings</key>

tankchintan

# First verify the version of Java being used is not SunJSK.
java -version

# Get the latest Sun Java SDK from Oracle http://www.oracle.com/technetwork/java/javase/downloads/jdk-7u1-download-513651.html
wget http://download.oracle.com/otn-pub/java/jdk/7u1-b08/jdk-7u1-linux-i586.rpm

# Rename the file downloaded, just to be nice
mv jdk-7u1-linux-i586.rpm\?e\=1320265424\&h\=916f87354faed15fe652d9f76d64c844 jdk-7u1-linux-i586.rpm

# Install Java