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@stackedsax
stackedsax / android_emu_start.sh
Created May 8, 2012 21:42
Script for starting up multiple android emulators per box
#!/bin/bash
#####
#
# This script creates android emulators on the fly.
#
# Please refer to the README for usage instructions.
#
####
@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active July 3, 2025 16:10
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@manfe
manfe / _some_field.html.haml
Created September 11, 2012 20:24
Creating <optgroup> in select fields using simple_form
= f.association :cities, :collection => State.all, :as => :grouped_select,
:group_method => :cities, :group_label_method => :name
@maxim
maxim / rails_load_path_tips.md
Last active January 9, 2025 00:59
How to use rails load paths, app, and lib directories.

In Rails 3

NOTE: This post now lives (and kept up to date) on my blog: http://hakunin.com/rails3-load-paths

If you add a dir directly under app/

Do nothing. All files in this dir are eager loaded in production and lazy loaded in development by default.

If you add a dir under app/something/

@felixgborrego
felixgborrego / gist:7943560
Last active April 10, 2019 12:01
To call Camera or Gallery Intent or any other intent in relation with photos. 1- look for all the available apps in the phone 2- Show a popup with the list of apps
package com.daft.ie.client.widget;
import java.util.ArrayList;
import java.util.List;
import com.daft.ie.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ComponentName;
@subudeepak
subudeepak / WebSockets.md
Last active December 4, 2024 13:36
The problems and some security implications of websockets - Cross-site WebSockets Scripting (XSWS)

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

  • The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
  • This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
  • This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t
@thebucknerlife
thebucknerlife / authentication_with_bcrypt_in_rails_4.md
Last active March 12, 2025 18:03
Simple Authentication in Rail 4 Using Bcrypt

#Simple Authentication with Bcrypt

This tutorial is for adding authentication to a vanilla Ruby on Rails app using Bcrypt and has_secure_password.

The steps below are based on Ryan Bates's approach from Railscast #250 Authentication from Scratch (revised).

You can see the final source code here: repo. I began with a stock rails app using rails new gif_vault

##Steps

@staltz
staltz / introrx.md
Last active July 7, 2025 10:24
The introduction to Reactive Programming you've been missing
@passsy
passsy / ArrayAdapter.java
Last active February 28, 2025 10:00
ArrayAdapter for RecyclerView
package com.pascalwelsch.utils;
import android.support.annotation.Nullable;
import android.support.v7.util.DiffUtil;
import android.support.v7.widget.RecyclerView;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;