skim sl4m

Programming Achievements: How to Level Up as a Developer

This gist is part of a blog post. Check it out at:

These are a list of usages of shell commands I can't live without on UNIX-based systems.

Using Homebrew (yes, I am opinionated) you can install the following tools with the following packages:

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	"Chris Rathman / [email protected]
	************************************************************************
	* Allowable characters: *
	* - a-z *
	* - A-Z *
	* - 0-9 *
	* - .+/\~<>@%\|&?
	* - blank, tab, cr, ff, lf *
	* *
	* Variables: *

	MySQL commands (from http://www.pantz.org/software/mysql/mysqlcommands.html)

	Create a database on the sql server.
	mysql> create database [databasename];

	List all databases on the sql server.
	mysql> show databases;

	Switch to a database.
	mysql> use [db name];

	(defn neighbors-of [cell]
	(set (for [dx [-1 0 1] dy [-1 0 1] :when (not (= [dx dy] [0 0]))]
	[(+ dx (first cell)) (+ dy (second cell))])))

	(defn alive? [[cell freqs] world]
	(or (and (= 2 freqs) (contains? world cell)) (= 3 freqs)))

	(defn tick [world]
	(let [frequencies (frequencies (reduce #(concat %1 (neighbors-of %2)) [] world))]
	(set (keys (filter #(alive? % world) frequencies)))))

	/**********************************************/
	/*
	/* Tomorrow Skin by Ben Truyman - 2012
	/*
	/* Based on Chris Kempson's Tomorrow Theme:
	/* https://github.com/ChrisKempson/Tomorrow-Theme
	/*
	/* Inspired by Darcy Clarke's blog post:
	/* http://darcyclarke.me/design/skin-your-chrome-inspector/
	/*

	Subject: Re: [pdxruby] Re: Complex return value anti-pattern?
	From: Ward Cunningham <[email protected]>
	Date: Thu, 29 Nov 2012 08:23:26 -0800

	Pair programming is often misunderstood.

	To understand pairing one must examine the world views of programmers. For
	many (perhaps all programmers historically) programming is difficult and re
	quires skill and concentration to be successful. For others, and here we fi
	nd roots in dynamic languages, programming is easy but requires imagination