hellerbarde

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

ryanflorence

# inconsistent

# behavior in a class
class A
  foo: ->
    el.addEventListener 'click', @bar
  bar: =>
    # the class instance, ideal but a special case for the fat arrow
    console.log(@)

ondrejmirtes

export PS1="\u:\W $ "

#GIT bash by HABR (modified by Dundee)
export PSORIG="$PS1"

function GITBRANCH() {
        BRANCH="$(git branch 2>/dev/null | grep '*' | cut -d" " -f2-)"
        if [ -n "$BRANCH" ] ; then
			export PS1="\u:\W "
			export PS1=$PS1$(echo -en "\[\033[00;37m\]$BRANCH \[\033[00m\]")

starenka

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import datetime
from pyquery import PyQuery as pq

doc = pq(url='http://www.jinakrajina.cz/cz/poledni-menu')
noms = doc.find('td > p')
print '\n%s'%noms[0].text_content()[2:]
for i,nom in enumerate(noms[1:-1:2],1):
    print '[%d] %s'%(i,nom.text_content().strip())

VasekPurchart

# used by Git (commit messages, rebase, ...)
export EDITOR=vim

fprochazka

<?php

abstract class BaseModel extends Nette\Object
{
	/** @var NotORM */
	protected $connection;



	/**

VonC

[user]
	name = VonC
	email = vonc@laposte.net
[core]
; just making sure those eol's stay as they are
	autocrlf = false
; see http://stackoverflow.com/a/22208863/6309 (Git/Bash is extremely slow in Windows 7 x64, until fix in msysgit 1.9.4)	
	fscache = true
[alias]
; from http://www.jukie.net/bart/blog/pimping-out-git-log, with author displayed

fprochazka

<?php

namespace Kdyby\Loaders;

use Doctrine;



class DoctrineLoader
{

fprochazka

<?php

/**
 * @see https://github.com/HosipLan/Nette-addDynamic
 */
class CreatePresenter extends BasePresenter
{

	protected function startup()
	{

fprochazka

<?php

function wc($level = 1) {
	if (\Nette\Debug::$productionMode) { return; }

	$o = function ($t) { return (isset($t->class) ? htmlspecialchars($t->class) . "->" : NULL) . htmlspecialchars($t->function) . '()'; };
	$f = function ($t) {
		$file = defined('APP_DIR') ? 'app' . str_replace(realpath(APP_DIR), '', realpath($t->file)) : $t->file;
		return '<a href="' . \Nette\DebugHelpers::editorLink($t->file, $t->line) . '">' . htmlspecialchars($file) . ':' . (int)$t->line . '</a>';
	};