I am working on designing a large database. In my application I will have many rows for example I currently have one table with 4 million records. Most of my queries use datetime clause to select data. Is it a good idea to index datetime fields in mysql database? ...

What is the cost of len() function for Python built-ins? (list/tuple/string/dictionary) 5 Answers ...

In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned upon. Instead, C++ programmers tend to pass references around, which is faster, but which introduces all sorts of complicated questions around ownership and especially around memory ma...

I've got a situation in which I need to show an integer value, bound to a property on my data context, after putting it through two separate conversions: ...

...Swift language. Let's say I used to do something like the following in Objective-C. I have readonly properties, and they cannot be individually changed. However, using a specific method, the properties are changed in a logical way. ...

Is there a W3 or any other noteworthy standard on how to represent a color (including alpha channel) in hex format? 5 Answe...

How do I download a ZIP file of an entire project from Google Code when there are no prepared downloads available? 6 Answe...

I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event. ...

Rails defines a bunch of magic with named routes that make helpers for your routes. Sometimes, especially with nested routes, it can get a little confusing to keep track of what URL you'll get for a given route helper method call. Is it possible to, using the Ruby console, see what link a given help...

How can I print messages (like a flag) to the Eclipse console (or log) when developing and debugging an Android app 5 Answe...