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# 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 |
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# user.rb | |
class User < ActiveRecord::Base | |
belongs_to :address | |
accepts_nested_attributes_for :address # can't have allow_destroy | |
end | |
# users_controller.rb | |
class UsersController < ApplicationController |
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# Author: Pieter Noordhuis | |
# Description: Simple demo to showcase Redis PubSub with EventMachine | |
# | |
# Update 7 Oct 2010: | |
# - This example does *not* appear to work with Chrome >=6.0. Apparently, | |
# the WebSocket protocol implementation in the cramp gem does not work | |
# well with Chrome's (newer) WebSocket implementation. | |
# | |
# Requirements: | |
# - rubygems: eventmachine, thin, cramp, sinatra, yajl-ruby |
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# Recursive backtracking algorithm for maze generation. Requires that | |
# the entire maze be stored in memory, but is quite fast, easy to | |
# learn and implement, and (with a few tweaks) gives fairly good mazes. | |
# Can also be customized in a variety of ways. | |
DIRS = (N, S, E, W = 1, 2, 4, 8) | |
DX = { E => 1, W => -1, N => 0, S => 0 } | |
DY = { E => 0, W => 0, N => -1, S => 1 } | |
OPPOSITE = { E => W, W => E, N => S, S => N } |
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/* | |
* ATTENTION: | |
* | |
* This layout is now maintained in the `iosched' code.google.com project: | |
* | |
* http://code.google.com/p/iosched/source/browse/android/src/com/google/android/apps/iosched/ui/widget/DashboardLayout.java | |
* | |
*/ | |
/* |
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from django.contrib.sessions.backends.base import SessionBase, CreateError | |
from django.conf import settings | |
from django.utils.encoding import force_unicode | |
import redis | |
class SessionStore(SessionBase): | |
""" Redis store for sessions""" | |
def __init__(self, session_key=None): | |
self.redis = redis.Redis( |
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from django.views.generic.base import View, TemplateResponseMixin | |
from django.views.generic.edit import FormMixin, ProcessFormView | |
class MultipleFormsMixin(FormMixin): | |
""" | |
A mixin that provides a way to show and handle several forms in a | |
request. | |
""" | |
form_classes = {} # set the form classes as a mapping |
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package android.support.v4.preference; | |
import android.app.Activity; | |
import android.content.Intent; | |
import android.os.Bundle; | |
import android.os.Handler; | |
import android.os.Message; | |
import android.preference.Preference; | |
import android.preference.PreferenceManager; | |
import android.preference.PreferenceScreen; |
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# WAIT! Do consider that `wait` may not be needed. This article describes | |
# that reasoning. Please read it and make informed decisions. | |
# https://www.varvet.com/blog/why-wait_until-was-removed-from-capybara/ | |
# Have you ever had to sleep() in Capybara-WebKit to wait for AJAX and/or CSS animations? | |
describe 'Modal' do | |
should 'display login errors' do | |
visit root_path |
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from geventwebsocket.handler import WebSocketHandler | |
from gevent.pywsgi import WSGIServer | |
from flask import Flask, request, render_template | |
app = Flask(__name__) | |
@app.route('/') | |
def index(): | |
return render_template('index.html') |
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