Gary Bernhardt garybernhardt

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Things that programmers don't know but should

(A book that I might eventually write!)

Gary Bernhardt

I imagine each of these chapters being about 2,000 words, making the whole book about the size of a small novel. For comparison, articles in large papers like the New York Times average about 1,200 words. Each topic gets whatever level of detail I can fit into that space. For simple topics, that's a lot of space: I can probably walk through a very basic, but working, implementation of the IP protocol.

	#!/usr/bin/env bash

	set -e

	if [ -e static ]; then
	rm -r static
	fi
	mkdir -p static
	sass src/sass/main.scss > static/application.css
	$(npm bin)/browserify src/js/main.js > static/application.js

	from collections import namedtuple
	from datetime import date

	# Here's a user defined using the usual "OO" style.
	class UserClass:
	def __init__(self, first, last, birthday):
	self.__first = first
	self.__last = last
	self.__birthday = birthday

	$ heroku pg:backups
	Installing Heroku Toolbelt v4... done.
	For more information on Toolbelt v4: https://github.com/heroku/heroku-cli
	Setting up node-v4.1.1... done
	Installing core plugins heroku-cli-addons, heroku-apps, heroku-fork, heroku-git, heroku-local, heroku-run, heroku-status...
	▸
	Error reading plugin: heroku-apps. See /Users/grb/.heroku/error.log for more information.
	Error reading plugin: heroku-cli-addons. See /Users/grb/.heroku/error.log for more information.
	Error reading plugin: heroku-fork. See /Users/grb/.heroku/error.log for more information.
	Error reading plugin: heroku-git. See /Users/grb/.heroku/error.log for more information.

	failbowl:~(master) $ curl 'http://maps.google.com/?saddr=St.%20Petersburg%20Shavrova%2015&daddr=St.%20Petersburg%20Sadovaya%2030&dirflg=r&output=json'
	<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
	<TITLE>302 Moved</TITLE></HEAD><BODY>
	<H1>302 Moved</H1>
	The document has moved
	<A HREF="http://maps.google.com/maps?saddr=St.%20Petersburg%20Shavrova%2015&daddr=St.%20Petersburg%20Sadovaya%2030&dirflg=r&output=json">here</A>.
	</BODY></HTML>

	failbowl:~(master) $ curl 'http://maps.google.com/maps?saddr=St.%20Petersburg%20Shavrova%2015&daddr=St.%20Petersburg%20Sadovaya%2030&dirflg=r&output=json'
	<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">

	CyBurTaz: i programed my comps memory to read my own lang
	RAVERgrl34: LoL... oh muh god!
	CyBurTaz: FOXXY STFU
	RAVERgrl34: you are a piece of shit!
	RAVERgrl34: ROFL
	RAVERgrl34: LMAO
	RAVERgrl34: oh muh god!
	RAVERgrl34: you are lamest mother fucking i have ever seen!
	RAVERgrl34: oh muh god, you are lame.

	def adjust(t,h);(3h)−(4t*h);end
	def adjust(t,h);(3h)-(4t*h);end

	module TwitterLib
	def self.authenticate
	libs = [Twitter, TweetStream]
	libs.each do \|lib\|
	lib.configure do \|config\|
	config.consumer_key = ENV.fetch("TWITTER_CONSUMER_KEY")
	config.consumer_secret = ENV.fetch("TWITTER_CONSUMER_SECRET")
	config.oauth_token = ENV.fetch("TWITTER_OAUTH_TOKEN")
	config.oauth_token_secret = ENV.fetch("TWITTER_OAUTH_SECRET")
	end

	# This is a stripped-down example based on Selecta's TTY handling. We store the
	# TTY state in `tty_state`, then go into an infinite loop. When the loop is
	# terminated by a ^C, we try to restore the TTY state. It's important that this
	# work, but it doesn't in some subtle situations, and I don't know why.
	#
	# Save this file as test.rb and run it via this command, where `stty` should
	# successfully restore the TTY state:
	# bash -c 'echo \| ruby test.rb'
	#
	# Next, run it via this command, where `stty` should fail to restore the TTY