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@jonavon
jonavon / CIDR.php
Created March 13, 2012 13:50
CIDR class for IPv4
<?php
/**
* CIDR.php
*
* Utility Functions for IPv4 ip addresses.
* Supports PHP 5.3+ (32 & 64 bit)
* @author Jonavon Wilcox <jowilcox@vt.edu>
* @revision Carlos Guimarães <cvsguimaraes@gmail.com>
* @version Wed Mar 12 13:00:00 EDT 2014
*/
@jboner
jboner / latency.txt
Last active May 3, 2024 15:17
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@AndrewRayCode
AndrewRayCode / gist:3784055
Created September 25, 2012 19:53
jQuery plugin for shift + click to select multiple checkboxes
// Usage: $form.find('input[type="checkbox"]').shiftSelectable();
// replace input[type="checkbox"] with the selector to match your list of checkboxes
$.fn.shiftSelectable = function() {
var lastChecked,
$boxes = this;
$boxes.click(function(evt) {
if(!lastChecked) {
lastChecked = this;
@fdob
fdob / gist:5983637
Last active November 30, 2022 01:14
in-diff: Use inotify to capture changes to a file, and output diffs to STDOUT. Needs inotify-tools.
#!/bin/bash
# hook into inotify to watch a file, and generate
# diffs for changes in real-time
#
# requires inotify-tools (apt-get install inotify-tools)
#
# @author Filipe Dobreira <filipe.dobreira@ez.no>
usage() {
echo "Usage:"
echo " in-diff <file>|help"
@guifromrio
guifromrio / nodejs-ubuntu-bind-port-80.md
Last active January 10, 2024 22:47
Allow Node.js to bind to privileged ports without root access on Ubuntu

How to: Allow Node to bind to port 80 without sudo

TL;DR

Only do this if you understand the consequences: all node programs will be able to bind on ports < 1024

sudo setcap 'cap_net_bind_service=+ep' /usr/local/bin/node

Important: your node location may vary. Use which node to find it, or use it directly in the command:

@firepol
firepol / bootstrap_ms.css
Last active September 23, 2020 19:14 — forked from andyl/bootstrap_ms.css
updated max-width: 767px to avoid breaking the existing behavior on col-sm
.col-ms-1,
.col-ms-2,
.col-ms-3,
.col-ms-4,
.col-ms-5,
.col-ms-6,
.col-ms-7,
.col-ms-8,
.col-ms-9,
.col-ms-10,
@jgbos
jgbos / README.md
Last active February 25, 2018 20:23
Simple Single Axis Zoom

This is an example of adding simple interface for single axis zoom and pan capability using the mouse. When the mouse is over the x or y axes, the panning and zooming with the mouse will execute on only those axes. When the mouse is over the main plotting canvas, pan and zoom with the mouse works on both axes. Feel free to comment on the gist.

@olejon
olejon / Install Spotify 0.9 on Fedora 64-bit
Last active September 17, 2022 08:34
Install Spotify 0.9 on Fedora 64-bit
# NOTES
# Spotify 0.9 vs 1.0 is stable, uses less resources overall and works well with Spotify Connect, SpotCommander, Local Files etc
# Tested and works on Fedora 29 64-bit with GNOME, but should work on previous versions as well
# The sources of the Dropbox files, which are hosted by me and the latest and greatest available, are listed above each one
# No system files will be overwritten by these or used by other programs since they depend on the later Fedora versions
# Make sure you copy the whole lines into Terminal
# Each command is on one line and might be long
# START GUIDE
@remojansen
remojansen / class_decorator.ts
Last active September 14, 2023 14:54
TypeScript Decorators Examples
function logClass(target: any) {
// save a reference to the original constructor
var original = target;
// a utility function to generate instances of a class
function construct(constructor, args) {
var c : any = function () {
return constructor.apply(this, args);
}
@syntagmatic
syntagmatic / README.md
Last active May 26, 2023 20:16
Nutrient Parallel Coordinates IV