MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

iphoting

# Assumption : bash-completion package is installed and enabled 
# Try it : just "source ledger" 
# Here are three possible ways to install this file 
# 1. As ~/.bash_completion file 
# 2. As ~/.bash_completion.d/ledger file, with additional file 
#  ~/.bash_completion which contents ". ~/.bash_completion.d/ledger" 
# 3. As /etc/bash_completion.d/ledger 

_ledger() 
{ 

alienhaxor

{% macro render_field(field) -%}
    {% set with_label = kwargs.pop('with_label', False) %}
    {% set placeholder = '' %}
    {% if not with_label %}
        {% set placeholder = field.label.text %}
    {% endif %}
    <div class="form-group {% if field.errors %}error{% endif %}">
        {% if with_label %}
            <label for="{{ field.id }}" class="control-label">
                {{ field.label.text }}{% if field.flags.required %} *{% endif %}:

anoved

// points = number of points (minimum 3)
// outer  = radius to outer points
// inner  = radius to inner points
module Star(points, outer, inner) {
	
	// polar to cartesian: radius/angle to x/y
	function x(r, a) = r * cos(a);
	function y(r, a) = r * sin(a);
	
	// angular width of each pie slice of the star

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

davidblewett

#!/bin/sh
#
# Import all SSH keys from LP
#
PREFIX=~
SSH_ASKPASS=$PREFIX/bin/lp-askpass.sh
export SSH_ASKPASS
# This is needed to force ssh-add to honor our SSH_ASKPASS.
DISPLAY=foo
export DISPLAY

derblub

#!/bin/bash

# if spotify is started
if [ "$(pidof spotify)" ]; then
    # status can be: Playing, Paused or Stopped
    status=`dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'PlaybackStatus'|egrep -A 1 "string"|cut -b 26-|cut -d '"' -f 1|egrep -v ^$`
    artist=`dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'Metadata'|egrep -A 2 "artist"|egrep -v "artist"|egrep -v "array"|cut -b 27-|cut -d '"' -f 1|egrep -v ^$`
    album=`dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'Metadata'|egrep -A 1 "album"|egrep -v "album"|cut -b 44-|cut -d '"' -f 1|egrep -v ^$`
    title=`dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 o

crash7

git filter-branch -f --msg-filter '
	read commit
	declare -A commits_replaces;
	commits_replaces["<commit hash>"]="new message"

	if [[ ${commits_replaces[$GIT_COMMIT]} ]]; then
		echo ${commits_replaces[$GIT_COMMIT]};
	else
		echo $commit
	fi' -- --all

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent