Jai tojaish

Python pyenv and virtualenvwrapper setup

This document will help you set up python for development on MacOS.

Install Pyenv

Pyenv allows you to have several python versions in your machine.

brew update

a simple git branching model (written in 2013)

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

Update: Woah, thanks for all the attention. Didn't expect this simple rant to get popular.

Run these once to setup git options:

git config --global push.default current
git config --global merge.defaultToUpstream true
git config --global branch.autosetupmerge true
git config --global branch.autosetuprebase remote
git config --global alias.cb 'checkout -b'
git config --global alias.ps 'push -u'
git config --global alias.pl '!git fetch -p && git rebase'

	1. Setup a project

	2. Add groovy SDK support:
	https://www.bonusbits.com/wiki/HowTo:Add_Groovy_SDK_to_IntelliJ_IDEA

	3. Download http://(yourjenkinsurl)/job/(yourpipelinejob)/pipeline-syntax/gdsl
	- this will give you the .gdsl file - download this to the src folder of your project.

	4. Finally follow this step - right click on the src folder -> Mark directory as -> Sources Root

	Below are the Big O performance of common functions of different Java Collections.


	List \| Add \| Remove \| Get \| Contains \| Next \| Data Structure
	---------------------\|------\|--------\|------\|----------\|------\|---------------
	ArrayList \| O(1) \| O(n) \| O(1) \| O(n) \| O(1) \| Array
	LinkedList \| O(1) \| O(1) \| O(n) \| O(n) \| O(1) \| Linked List
	CopyOnWriteArrayList \| O(n) \| O(n) \| O(1) \| O(n) \| O(1) \| Array


	// Create a new MergeStrategy for aop.xml files
	val aopMerge: MergeStrategy = new MergeStrategy {
	val name = "aopMerge"
	import scala.xml._
	import scala.xml.dtd._

	def apply(tempDir: File, path: String, files: Seq[File]): Either[String, Seq[(File, String)]] = {
	val dt = DocType("aspectj", PublicID("-//AspectJ//DTD//EN", "http://www.eclipse.org/aspectj/dtd/aspectj.dtd"), Nil)
	val file = MergeStrategy.createMergeTarget(tempDir, path)

	# First install tmux
	brew install tmux

	# For mouse support (for switching panes and windows)
	# Only needed if you are using Terminal.app (iTerm has mouse support)
	Install http://www.culater.net/software/SIMBL/SIMBL.php
	Then install https://bitheap.org/mouseterm/

	# More on mouse support http://floriancrouzat.net/2010/07/run-tmux-with-mouse-support-in-mac-os-x-terminal-app/

	trait Enum { //DIY enum type
	import java.util.concurrent.atomic.AtomicReference //Concurrency paranoia

	type EnumVal <: Value //This is a type that needs to be found in the implementing class

	private val _values = new AtomicReference(Vector[EnumVal]()) //Stores our enum values

	//Adds an EnumVal to our storage, uses CCAS to make sure it's thread safe, returns the ordinal
	private final def addEnumVal(newVal: EnumVal): Int = { import _values.{get, compareAndSet => CAS}
	val oldVec = get

	[alias]
	fetch-pr = "!f() { git fetch origin refs/pull/$1/head:pr/$1; } ; f"
	delete-prs = "!git for-each-ref refs/heads/pr/* --format='%(refname)' \| while read ref ; do branch=${ref#refs/heads/} ; git branch -D $branch ; done"

Jai tojaish

Python pyenv and virtualenvwrapper setup

Install Pyenv

a simple git branching model (written in 2013)

Run these once to setup git options:

Use them like this: