I'm trying to get my head around mutable vs immutable objects. Using mutable objects gets a lot of bad press (e.g. returning an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should...

In play1, I usually get all data in actions, use them directly in views. Since we don't need to explicitly declare parameters in view, this is very easy. ...

Using core jQuery, how do you remove all the options of a select box, then add one option and select it? 24 Answers ...

What is the purpose of using android.intent.category.DEFAULT in the Category field of Intent Filters? 7 Answers ...

I was wondering what exactly is the difference between MVC(which is an architectural pattern) and an n-tier architecture for an application. I searched for it but couldn't find a simple explanation. May be I am a bit naive on MVC concepts, so if anyone can explain the difference then it would be gre...

I'm making a pagination system (sort of like Facebook) where the content loads when the user scrolls to the bottom. I imagine the best way to do that is to find when the user is at the bottom of the page and run an ajax query to load more posts. ...

I tried to install the Python package dulwich : 42 Answers 42 ...

When using the OAuth protocol, you need a secret string obtained from the service you want to delegate to. If you are doing this in a web app, you can simply store the secret in your data base or on the file system, but what is the best way to handle it in a mobile app (or a desktop app for that mat...

What does fragment mean in ANTLR? 4 Answers 4 ...

I am trying to figure out how to add border only inside the table. When I do: 9 Answers ...