Gary Hewett techmag

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

	package controllers

	import play.api._
	import libs.ws.WS
	import play.api.mvc._
	import com.micronautics.paypal.{TransactionProcessor, PaypalTransactions}
	import java.net.URLEncoder
	import concurrent.{Await, ExecutionContext}
	import concurrent.duration.Duration
	import java.util.concurrent.TimeUnit

	package util

	object Slug {
	def apply(input:String) = slugify(input)

	def slugify(input: String): String = {
	import java.text.Normalizer
	Normalizer.normalize(input, Normalizer.Form.NFD)
	.replaceAll("[^\\w\\s-]", "") // Remove all non-word, non-space or non-dash characters
	.replace('-', ' ') // Replace dashes with spaces

	#!/bin/sh
	### BEGIN INIT INFO
	# Provides: generic-prog
	# Required-Start: $local_fs $remote_fs $network
	# Required-Stop: $local_fs $remote_fs $network
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6
	# Short-Description: Generic Program
	# Description: Generic Program is a generic program to do generic things with
	### END INIT INFO

	README.txt - DIY Scala Enumeration
	Copyright (C) 2014-2016 Jim O'Flaherty

	Overview:
	Provide in Scala the closest equivalent to Java Enum
	- includes decorating each declared Enum member with extended information
	- guarantees pattern matching exhaustiveness checking
	- this is not available with scala.Enumeration

	ScalaOlio library (GPLv3) which contains more up-to-date versions of both `org.scalaolio.util.Enumeration` and `org.scalaolio.util.EnumerationDecorated`:

	/*

	Overview
	--------

	To run a query using anorm you need to do three things:

	1. Connect to the database (with or without a transaction)
	2. Create an instance of `anorm.SqlQuery` using the `SQL` string interpolator
	3. Call one of the methods on `SqlQuery` to actually run the query

	@(field:Field, min:Int=1)(f: (Field, Int) => Html)
	@{
	(0 until math.max(if (field.indexes.isEmpty) 0 else field.indexes.max + 1, min)).map(i => f(field("[" + i + "]"),i))
	}