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@pguillory
pguillory / gist:729616
Created December 5, 2010 23:51
Hooking into Node.js stdout
var util = require('util')
function hook_stdout(callback) {
var old_write = process.stdout.write
process.stdout.write = (function(write) {
return function(string, encoding, fd) {
write.apply(process.stdout, arguments)
callback(string, encoding, fd)
}
@matoakley
matoakley / gist:1092571
Created July 19, 2011 14:38
MySQL to convert a string into a slug
LOWER(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(TRIM('My String'), ':', ''), ')', ''), '(', ''), ',', ''), '\\', ''), '\/', ''), '\"', ''), '?', ''), '\'', ''), '&', ''), '!', ''), '.', ''), ' ', '-'), '--', '-'), '--', '-')) AS `post_name`
@jboner
jboner / latency.txt
Last active July 23, 2024 14:12
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
@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active July 23, 2024 05:34
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active July 22, 2024 23:19
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@lancejpollard
lancejpollard / cursor-position.js
Created September 22, 2012 07:24
Get Cursor Position in Terminal with Node.js
module.exports = function(callback) {
require('child_process').exec('./cursor-position.sh', function(error, stdout, stderr) {
callback(error, JSON.parse(stdout));
});
}
@davoclavo
davoclavo / dataURItoBlob.js
Last active May 26, 2023 14:45
Convert dataURI to Blob so large images do not crash the browser. Based on: http://stackoverflow.com/questions/10412299 and http://stackoverflow.com/questions/6850276
/*
The MIT License (MIT)
Copyright (c) 2016 David Gomez-Urquiza
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
@tshaddix
tshaddix / ngjson.js
Created August 4, 2013 00:20
Very basic modification of Express JS res.json(). Adds the safety prefix for Angular JS to the body of all json responses. Extends the response object with one method: ngJSON. Simply require file somewhere in application (normally app.js) before executing ngJSON responses.
var http = require('http');
var NG_PREFIX = ")]}',\n";
http.ServerResponse.prototype.ngJSON = function(obj){
// allow status / body
if (2 == arguments.length) {
// res.json(body, status) backwards compat
if ('number' == typeof arguments[1]) {
this.statusCode = arguments[1];
@joshbeckman
joshbeckman / animatedScrollTo.js
Created September 30, 2013 14:51
ScrollTo animation using pure javascript and no jquery
document.getElementsByTagName('button')[0].onclick = function () {
scrollTo(document.body, 0, 1250);
}
function scrollTo(element, to, duration) {
var start = element.scrollTop,
change = to - start,
currentTime = 0,
increment = 20;
@LeZuse
LeZuse / gist:6994454
Created October 15, 2013 16:31
WinAPI EnumWindow example
#include <windows.h>
#include <stdio.h>
BOOL CALLBACK EnumWindowsProc(HWND hWnd, long lParam) {
char buff[255];
if (IsWindowVisible(hWnd)) {
GetWindowText(hWnd, (LPSTR) buff, 254);
printf("%s\n", buff);
}