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A cron job for rails: best practices?
...this is quite an old question and answer! Some new info:
the heroku cron service I referenced has since been replaced by Heroku Scheduler
for frequent tasks (esp. where you want to avoid the Rails environment startup cost) my preferred approach is to use system cron to call a script that will eith...
What is Express.js?
...amework for Node.js
It is used for easier creation of web applications and services
Express.js simplifies development and makes it easier to write secure, modular and fast applications. You can do all that in plain old Node.js, but some bugs can (and will) surface, including security concerns (eg. n...
Difference between binary semaphore and mutex
...happen (a sensor being tripped for example).
Sensor Trips and an Interrupt Service Routine runs. It needs to notify a task of the trip.
Task B should run and take appropriate actions for the sensor trip. Then go back to waiting.
Task A Task B
... ...
What is the difference between POST and GET? [duplicate]
...al reason for why GET should only be used to retrieve data:
Authors of services which use the HTTP protocol SHOULD NOT use GET based forms for the submission of sensitive data, because this will cause this data to be encoded in the Request-URI. Many existing servers, proxies, and user agents wil...
Best practices for large solutions in Visual Studio (2008) [closed]
...aller.Database
OurStuff.App.MediaPlayer
OurStuff.App.Operator
OurStuff.App.Service.Gateway
OurStuff.App.Service.CollectionStation
OurStuff.App.ServiceLocalLauncher
OurStuff.App.StackTester
OurStuff.Auditing
OurStuff.Data
OurStuff.Database
OurStuff.Database.Constants
OurStuff.Database.ObjectModel
Our...
Why all the Active Record hate? [closed]
...n" objects that are accessed by your controllers via these DataMapper (or "service layer") classes. These do not directly mirror the database, but act as your OO representation for some real-world object. Say you have a User class in your domain, and need to have references to, or collections of oth...
Good or bad practice for Dialogs in wpf with MVVM?
...
What if instead of using services, one uses a sort of Callback to facilitate interaction with the ViewModel and the View? For example, View executes a Command in the ViewModel, then when all is said and done, the ViewModel fires a Callback for the Vi...
Hide options in a select list using jQuery
...re apparently expecting variable interpolation. Try this:
$("#edit-field-service-sub-cat-value option[value=" + title + "]").hide();
Note that this will probably break in various hideous ways if title contains jQuery selector metacharacters.
...
Android equivalent to NSNotificationCenter
...ers and Notification center.
First create some kind of NotificationCenter service:
public class NotificationCenter {
public static void addObserver(Context context, NotificationType notification, BroadcastReceiver responseHandler) {
LocalBroadcastManager.getInstance(context).registerReceiver...
doGet and doPost in Servlets
...c class ProductsServlet extends HttpServlet {
@EJB
private ProductService productService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Product> products = productService.list();
...