ohac

import javax.crypto.spec.SecretKeySpec
import javax.crypto.Mac

object A {
  def main(args: Array[String]): Unit = {
    val secret = new SecretKeySpec("the_secret".getBytes, "HmacSHA1")
    val mac = Mac.getInstance("HmacSHA1")
    mac.init(secret)
    val result: Array[Byte] = mac.doFinal("foo".getBytes)
    println(result.map(_.toString).mkString(","))

jorgeortiz85

// Usage:
//   p(instance)('privateMethod)(arg1, arg2, arg3)

class PrivateMethodCaller(x: AnyRef, methodName: String) {
  def apply(_args: Any*): Any = {
    val args = _args.map(_.asInstanceOf[AnyRef])
    def _parents: Stream[Class[_]] = Stream(x.getClass) #::: _parents.map(_.getSuperclass)
    val parents = _parents.takeWhile(_ != null).toList
    val methods = parents.flatMap(_.getDeclaredMethods)
    val method = methods.find(_.getName == methodName).getOrElse(throw new IllegalArgumentException("Method " + methodName + " not found"))

textarcana

#!/usr/bin/env bash

# Use this one-liner to produce a JSON literal from the Git log:

git log \
    --pretty=format:'{%n  "commit": "%H",%n  "author": "%aN <%aE>",%n  "date": "%ad",%n  "message": "%f"%n},' \
    $@ | \
    perl -pe 'BEGIN{print "["}; END{print "]\n"}' | \
    perl -pe 's/},]/}]/'

julienrf

// --- Definition of a query string binder for type A using a Mapping[A]

object Binders {
  implicit def mappingBinder[A](implicit mapping: Mapping[A]) = new QueryStringBindable[A] {
    override def bind(key: String, params: Map[String, Seq[String]]): Option[Either[String, A]] = {
      val data = for {
        (k, ps) <- params
        if k startsWith key
        p <- ps.headOption
      } yield (k.drop(key.length + 1), p)

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

gclaramunt

trait FlightStatus
trait Flying extends FlightStatus
trait Landed extends FlightStatus

case class Plane[Status <: FlightStatus]()

def land(p:Plane[Flying])=Plane[Landed]()
def takeOff(p:Plane[Landed])= Plane[Flying]()

val plane = new Plane[Landed]()

brandonb927

#!/bin/sh

###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###

# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx

egaumer

# simple match all query with term facet
ejs.Request()
    .indices("myindex")
    .types("mytype")
    .query(ejs.MatchAllQuery())
    .facet(
        ejs.TermsFacet('url')
            .field('url')
            .size(20))

revolunet

AngularJS best ressources

Following the AngularJS PARIS meetup (25/2 à 19h à Paris with @sampaccoud @dzen @_kemar @tchack13 @vinz et @revolunet)

Here's our best AngularJS ressources : twitter, github, articles & blogs. Please comment and add your good stuff !

• AngularJS VS jQuery : http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background/15012542#15012542 (MUST READ for beginners)
• What are the nuances of scope prototypal / prototypical inheritance in AngularJS? : http://stackoverflow.com/questions/14049480/what-are-the-nuances-of-scope-prototypal-prototypical-inheritance-in-angularjs (MUST READ)
• twitter list maintained here: https://twitter.com/revolunet/angularjs
• must see vidéos :http://egghead.io (MUST SEE)