JPvRiel

References:

• Ubuntu Community Wiki - PinningHowto
• Debian Wiki - AptPreferences

Overview

Priority values

From man page: man apt_preferences

jeffrafter

Hack on github.com with Kyle Neath

At GitHub, they've set out to GitHub be the best place to share code with friends, co-workers, classmates, and complete strangers.

Already, over three million people use GitHub to build amazing things together.

But that isn't enough. Everyone should enjoy the benefits of Git and everyone should Fork everything.

It turns out GitHub needs your help. You can be GitHub's partner in crime to help Kneath out.

badboy

Original link: http://www.concentric.net/~Ttwang/tech/inthash.htm
Taken from: http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
Reformatted using pandoc

Integer Hash Function

Thomas Wang, Jan 1997

last update Mar 2007

codrineugeniu

# Zoresvit (c) 2012 <zoresvit@gmail.com>
# Solarized colorscheme for pidgin. This file seats in
# ~/.purple/gtkrc-2.0

style "pidgin-solarized" {
    font_name = "Sans 11"
    base[NORMAL] = "#002B36"
    text[NORMAL] = "#839496"
  # Change the color of hyperlinks.
  GtkIMHtml::hyperlink-color = "#268BD2"

afair

==========================================          ==========================================
             TMUX COMMAND                                        WINDOW (TAB)
==========================================          ==========================================

List    tmux ls                                     List         ^b w
New          new -s <session>                       Create       ^b c
Attach       att -t <session>                       Rename       ^b , <name>
Rename       rename-session -t <old> <new>          Last         ^b l               (lower-L)
Kill         kill-session -t <session>              Close        ^b &

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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

them0nk

#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)