songpp

Regular Expression Engine Comparison Chart

Many different applications claim to support regular expressions. But what does that even mean?

Well there are lots of different regular expression engines, and they all have different feature sets and different time-space efficiencies.

The information here is just copied from: http://regular-expressions.mobi/refflavors.html

songpp

This note explains how to build Postgres from source and setup to debug it using LLDB on a Mac. I used this technique to research this article:
http://patshaughnessy.net/2014/10/13/following-a-select-statement-through-postgres-internals

1. Shut down existing postgres if necessary - you don’t want to mess up your existing DB or work :)

$ ps aux | grep postgres
pat               456   0.0  0.0  2503812    828   ??  Ss   Sun10AM   0:11.59 postgres: stats collector process       
pat               455   0.0  0.0  2649692   2536   ??  Ss   Sun10AM   0:05.00 postgres: autovacuum launcher process       
pat               454   0.0  0.0  2640476    304   ??  Ss   Sun10AM   0:00.74 postgres: wal writer process       
pat               453   0.0  0.0  2640476    336   ??  Ss   Sun10AM   0:00.76 postgres: writer process       

songpp

I use the first


—– BEGIN LICENSE —–
Michael Barnes
Single User License
EA7E-821385
8A353C41 872A0D5C DF9B2950 AFF6F667
C458EA6D 8EA3C286 98D1D650 131A97AB
AA919AEC EF20E143 B361B1E7 4C8B7F04

songpp

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.

---

songpp

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

songpp

#!/bin/bash
#
# git-svn-diff originally by (http://mojodna.net/2009/02/24/my-work-git-workflow.html)
# modified by mike@mikepearce.net
# modified by aconway@[redacted] - handle diffs that introduce new files
# modified by t.broyer@ltgt.net - fixes diffs that introduce new files
# modified by m@rkj.me - fix sed syntax issue in OS X
# modified by songpengpeng - fix sed newline issue in OS X
#
# Generate an SVN-compatible diff against the tip of the tracking branch

songpp

{
	// Sets the colors used within the text area
	"color_scheme": "Packages/Color Scheme - Default/Monokai.tmTheme",

	// Note that the font_face and font_size are overriden in the platform
	// specific settings file, for example, "Base File (Linux).sublime-settings".
	// Because of this, setting them here will have no effect: you must set them
	// in your User File Preferences.
	"font_face": "Monaco",
	"font_size": 12,

songpp

import sbt._
import Keys._
import org.sbtidea._
import SbtIdeaPlugin._
import Scope.{GlobalScope, ThisScope}

object BuildSettings {
  val buildOrganization = "com.mojolly.backchat"
  val buildScalaVersion = "2.9.0-1"
  val buildVersion      = "0.8.1-SNAPSHOT"

songpp

package com.baidu.cms.thirtpart
import util.parsing.combinator.JavaTokenParsers
import java.io.FileReader
import java.util.regex.Pattern
import com.baidu.cms.thirtpart.TransferRuleContext._
import com.baidu.cms.thirtpart.TransferRuleContext.ActivityRef
import com.baidu.cms.thirtpart.TransferRuleContext.FieldValueFilter
import com.baidu.cms.thirtpart.TransferRuleContext.Rule
import com.baidu.cms.thirtpart.TransferRuleContext.OperatorFetchStrategy
import scala.collection.JavaConversions._

songpp

// requires Scala 2.10.0-M7
def kind[A: scala.reflect.TypeTag]: String = {
  import scala.reflect.runtime.universe._
  def typeKind(sig: Type): String = sig match {
    case PolyType(params, resultType) =>
      (params map { p =>
        typeKind(p.typeSignature) match {
          case "*" => "*"
          case s   => "(" + s + ")"
        }