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@AliSoftware
AliSoftware / Bindings.swift
Last active May 22, 2024 08:45
Re-implementation of @binding and @State (from SwiftUI) myself to better understand it
/*:
This is a concept re-implementation of the @Binding and @State property wrappers from SwiftUI
The only purpose of this code is to implement those wrappers myself
just to understand how they work internally and why they are needed,
⚠️ This is not supposed to be a reference implementation nor cover all
subtleties of the real Binding and State types.
The only purpose of this playground is to show how re-implementing
them myself has helped me understand the whole thing better
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active June 13, 2024 21:59
Making efficient use of the libdispatch (GCD)

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

  • You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

  • Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

@waylybaye
waylybaye / shell
Last active December 15, 2015 03:29
migrate old django `url` templatetag to new style Django 1.5 url
find . -name "*.html" -exec sed -i "" -e 's/{% *url *\([a-zA-Z0-9_:]*\)/{% url "\1"/g' '{}' \;
/**
*
* Copyright © 2009, 2010 Apple Inc. All rights reserved.
*
**/
/* iAd JS Version:1.1 */
.ad-view {
position:absolute;
top:0;
@albertsun
albertsun / linebreaks_wp.py
Created August 21, 2011 05:44
Python port of WordPress's wpautop filter
import re
from django import template
from django.utils.functional import allow_lazy
from django.template.defaultfilters import stringfilter
from django.utils.safestring import mark_safe, SafeData
from django.utils.encoding import force_unicode
from django.utils.html import escape
from django.utils.text import normalize_newlines
register = template.Library()
@e000
e000 / socks.py
Created March 14, 2011 20:21
socksipy + urllib2 handler
"""SocksiPy - Python SOCKS module.
Version 1.00
Copyright 2006 Dan-Haim. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
@balupton
balupton / README.md
Last active April 20, 2022 13:21
Ajaxify a Website with the HTML5 History API using History.js, jQuery and ScrollTo
@blueyed
blueyed / Puppet config snippet to define a Launchpad PPA
Created February 25, 2011 23:48
This defines pparepo which allows to add a PPA (Personal Package Archive) repository from Launchpad to a client. It uses apt::key, which I have taken (and maybe modified) from http://projects.puppetlabs.com/projects/1/wiki/Apt_Keys_Patterns (blog post at
# Setup a PPA repo, where the name is "user/ppaname", e.g. "blueyed/ppa" ("ppa" being the default)
define pparepo($apt_key = "", $dist = $ppa_default_name, $supported = ["lucid", "hardy"], $ensure = present, $keyserver = "keyserver.ubuntu.com") {
$name_for_file = regsubst($name, '/', '-', 'G')
$file = "/etc/apt/sources.list.d/pparepo-${name_for_file}.list"
file { "$file": }
case $ensure {
present: {
if ($dist) and ($dist in $supported) {
File["$file"] {