...enormalized value or a signed zero, and an operation that has no mathematically definite result produces NaN. All numeric operations with NaN as an operand produce NaN as a result. As has already been described, NaN is unordered, so a numeric comparison operation involving one or two NaNs returns fa...

... { to give it some extra weight. I've never heard of developers prefacing all their methods with underscores, so I can't begin to explain what causes that. share | improve this answer | ...

...es' code which had typedefs for pointers to functions with arguments. I recall that it took me a while to get around to such a definition while trying to understand a numerical algorithm written in C a while ago. So, could you share your tips and thoughts on how to write good typedefs for pointers t...

...) and suddenly it compile perfectly. Try moving it higher up the page. Totally unsure as to why this would cause issues though. Edit: Figured it out. The #include <math.h> occurs within cmath's header guards. This means that something higher up the list of #includes is including cmath with...

... For example, you might have a playbook something like this: - hosts: all vars_files: - secret tasks: - name: Do something as sudo service: name=nginx state=restarted sudo: yes Here we are including a file called secret which will contain our sudo password. We will...

... First of all, you shouldn't rebuild all your views to fit a new screen, nor use different views for different screen sizes. Use the auto-resizing capabilities of iOS, so your views can adjust, and adapt any screen size. That's not v...

...on __file__ to find out the parent directory (a couple of os.path.dirname calls will do;-), then (if that directory is not already on sys.path) prepend temporarily insert said dir at the very start of sys.path, __import__, remove said dir again -- messy work indeed, but, "when you must, you must" (a...

I want to find all values in a Pandas dataframe that contain whitespace (any arbitrary amount) and replace those values with NaNs. ...

...rks) This solution is based on Entity Attribute Value data model, essentially, it uses several tables to store dynamic attributes of objects. Great parts about this solution is that it: uses several pure and simple Django models to represent dynamic fields, which makes it simple to understand an...

... Going all the way down to the basics for Map and Reduce. Map is a function which "transforms" items in some kind of list to another kind of item and put them back in the same kind of list. suppose I have a list of numbers: [1,2...