Ryan Hartje goshlanguage

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

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

Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }

	/* This is the original elf.h file from the GNU C Library; I only removed
	the inclusion of feature.h and added definitions of __BEGIN_DECLS and
	__END_DECLS as documented in
	https://cmd.inp.nsk.su/old/cmd2/manuals/gnudocs/gnudocs/libtool/libtool_36.html

	On macOS, simply copy the file to /usr/local/include/.

	Mathias Lafeldt <[email protected]> */

	/* This file defines standard ELF types, structures, and macros.

	<!DOCTYPE html>
	<html lang="en">
	<head><script type="text/javascript">var NREUMQ=NREUMQ\|\|[];NREUMQ.push(["mark","firstbyte",new Date().getTime()]);</script>
	<link href='/static/bootstrap/css/bootstrap.css' rel='stylesheet' type='text/css' />
	<link href='/static/wysihtml5/bootstrap-wysihtml5.css' rel='stylesheet' type='text/css' />
	</head>

	<body>
	...
	<script src="/static/wysihtml5/wysihtml5-0.3.0.min.js"></script>

	from flask import Flask, render_template

	app = Flask(__name__)

	@app.route('/')
	@app.route('/index')
	def index(chartID = 'chart_ID', chart_type = 'bar', chart_height = 350):
	chart = {"renderTo": chartID, "type": chart_type, "height": chart_height,}
	series = [{"name": 'Label1', "data": [1,2,3]}, {"name": 'Label2', "data": [4, 5, 6]}]
	title = {"text": 'My Title'}

	// Tired of getting Meetup.com notifications? Me too.
	// 1. Navigate to: http://www.meetup.com/account/comm/ (you must be logged in!)
	// 2. Open your browser's console, and paste in the script below:

	$('.commSettings').each(function(idx, item) {var $item = $(item);var boardId = $item.attr("id").split('_')[1];var url = $item.children('form').attr('action');var params = {evRemind:1,mailing_list_status:0, submitButton:'Save Settings', submit:'submit'};params['board_' + boardId] = boardId;$.ajax({data: params, url: url, type: 'post'});});$('.generalEmailSettings').find('input[type="checkbox"]').prop('checked', false);$('.generalEmailSettings').find('input[type="submit"]').click();

	#cloud-config

	#Credit: many portions of this config came from the great work detailed here by:
	#Behner, brianclements, Metamogul and especially crawford for the cloud-config inside a cloud-config idea:
	#https://github.com/coreos/coreos-cloudinit/issues/205

	ssh_authorized_keys:
	- ssh-rsa <core user key goes here>

	#This writes a cloud-config to the PXE booted system that