... a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead nan is assigned. Surely None is more descriptive of an empty cell as it has a null value, whe...

...ng>) deserializeMap(); There is no way to determine whether the Map really should have the generic parameters <String, String>. You must know beforehand what the parameters should be (or you'll find out when you get a ClassCastException). This is why the code generates a warning, because ...

... the "type" of an object, which is a wobbly term in the Ruby world, is to call object.class. Since classes can inherit from other classes, if you want to determine if an object is "of a particular type" you might call object.is_a?(ClassName) to see if object is of type ClassName or derived from it....

... There are really three major reasons: Inefficiency in moving data to the consumer. When you SELECT *, you're often retrieving more columns from the database than your application really needs to function. This causes more data to mov...

I am working on a WordPress site where the authors usually embed Google Maps using iFrames in most posts. 30 Answers ...

...eries against many targets (databases, in-memory objects, XML) with practically no consideration of the underlying way in which the query will be executed. Let's start this exploration with the parts belonging to the .NET Framework (3.5). LINQ To Objects - examine System.Linq.Enumerable for query...

...me or update the existing one if you don't need it: To add a new remote, called for example github instead of origin (which obviously already exists in your system), do the following: $ git remote add github git@github.com:ppreyer/first_app.git Remember though, everywhere in the tutorial you see...

... When we first get into main, the space left over is X-M. Each recursive call takes up R more memory. So for 1 recursive call (1 more than original), the memory use is M + R. Suppose that StackOverflowError is thrown after C successful recursive calls, that is, M + C * R <= X and M + C * (R + 1)...

...code. Returning 0 or -1 for null, so long as you choose one and return it all the time, will work. Obviously, non-null hash codes should not return whatever value you use for null. Similar questions: GetHashCode on null fields? What should GetHashCode return when object's identifier is null? Th...

... Personally I can't convince myself to litter my code with the markers. I've become pretty used to (and efficient) at using indent-folding. Together with my mapping of space bar (see below) to open/close folds and the zR and zM comm...