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@JosephPecoraro
JosephPecoraro / shell-execution.rb
Last active September 28, 2025 09:58
Shell Execution in Ruby
# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro
cmd = "echo 'hi'" # Sample string that can be used
# 1. Kernel#` - commonly called backticks - `cmd`
# This is like many other languages, including bash, PHP, and Perl
# Synchronous (blocking)
# Returns the output of the shell command
# Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111
@jboner
jboner / latency.txt
Last active September 17, 2026 10:43
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
@taterbase
taterbase / system-beep.js
Created July 21, 2012 05:01
System Beep in Node.js
function alertTerminal(){
console.log("\007");
}
@Mithrandir0x
Mithrandir0x / gist:3639232
Created September 5, 2012 16:15
Difference between Service, Factory and Provider in AngularJS
// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc
// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/
// author: Pawel Kozlowski
var myApp = angular.module('myApp', []);
//service style, probably the simplest one
myApp.service('helloWorldFromService', function() {
this.sayHello = function() {
return "Hello, World!"
@miguelgrinberg
miguelgrinberg / rest-server.py
Last active July 30, 2025 09:09
The code from my article on building RESTful web services with Python and the Flask microframework. See the article here: http://blog.miguelgrinberg.com/post/designing-a-restful-api-with-python-and-flask
#!flask/bin/python
from flask import Flask, jsonify, abort, request, make_response, url_for
from flask_httpauth import HTTPBasicAuth
app = Flask(__name__, static_url_path = "")
auth = HTTPBasicAuth()
@auth.get_password
def get_password(username):
if username == 'miguel':
@jpetazzo
jpetazzo / README.md
Last active September 30, 2022 05:36
Share a directory with a docker container

Rectifier

The diode bridge is the simplest rectifier I know.

Rectifier lets you share a directory with a docker container (just like $yourvm shared folders).

You don't have to install anything in your containers, and you only need to install diod in the host. diod is packaged on Ubuntu/Debian distros, and will automatically be apt-get install-ed if needed.

Since it uses diod to make a bridge, I called it rectifier. Yeah, that sucks, so if you have a better name, I'll steal it!

@ismell
ismell / Dockerfile
Created July 10, 2013 14:38
Installing ruby into a Docker image
FROM cws/base:2013-07-01
MAINTAINER Raul E. Rangel "Raul.Rangel@disney.com"
# Download the ruby-build code
RUN \curl -L https://github.com/sstephenson/ruby-build/archive/v20130518.tar.gz | tar -zxvf - -C /tmp/
# Install ruby-build
RUN cd /tmp/ruby-build-* && ./install.sh && cd / && rm -rfv /tmp/ruby-build-master
# Install ruby
@xaviervia
xaviervia / nginx-environment.md
Last active July 1, 2019 12:45
Nginx and Docker links with environment variables, a love story

How to add environment variables to nginx.conf

This is the hack approach to adding environment variables to the nginx configuration files. As with most Google results for this search, the reason is Docker.

The setup

I intended to deploy two Docker containers.

@SerafimArts
SerafimArts / tips.md
Last active October 22, 2021 21:43
Tips And Tricks: PhoneGap + Mobile Development (~2015 year)
  • На iOS устройствах числовые значения подчёркиваются синим. Эта проблема возникает из-за того, что iOS устройства по умолчанию считают все числа похожие на телефонные номера - телефонными номерами. Решается добавлением <meta name="format-detection" content="telephone=no" /> Тоже самое касается адреса: <meta name="format-detection" content="address=no" />

  • Пользователь может уменьшать и увеличивать приложение. Решается добавляением тега <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />

  • Ссылки нажимаются с задержкой (примерно 300ms). Решается подпиской на событие touchstart и принудительной инициализацией события click после него. Если проблема всё равно возникает - ничего не поделать, надо облегчать dom. Как вариант - можно использовать библиотеку, посоветанную @adubovsky ниже в комментариях: https://gist.github.com/SerafimArts/de9900f99

@rafbm
rafbm / gist:9068f377f54b6b7a0915
Created January 19, 2015 15:52
Ruby String#tr VS String#gsub benchmark
require 'benchmark'
STRING = 'Haha hah hahaa ahah!!'
FIND = 'a'
REPLACE = 'o'
STRING.tr(FIND, REPLACE) == STRING.gsub(FIND, REPLACE) or abort
Benchmark.bmbm do |bm|
bm.report '.tr' do