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How to determine if a list of polygon points are in clockwise order?
...on-convex polygon, such as a crescent. Here's a simple one that will work with non-convex polygons (it'll even work with a self-intersecting polygon like a figure-eight, telling you whether it's mostly clockwise).
Sum over the edges, (x2 − x1)(y2 + y1). If the result is positive the curve is cloc...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...e another.
This scenario arises when a class assumes too many responsibilities, or when one concern is spread over many classes rather than having its own class.
Loose coupling is achieved by means of a design that promotes single-responsibility and separation of concerns.
A loosely-coupled clas...
What is the 'dynamic' type in C# 4.0 used for?
C# 4.0 introduced a new type called 'dynamic'. It all sounds good, but what would a programmer use it for?
10 Answers
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What is the difference between a framework and a library?
...example, on Mac OS X frameworks are just libraries, packed into a bundle. Within the bundle you will find an actual dynamic library (libWhatever.dylib). The difference between a bare library and the framework on Mac is that a framework can contain multiple different versions of the library. It can c...
Function pointers, Closures, and Lambda
...nd, as I was reading the K&R chapter on the subject, the first thing that hit me was, "Hey, this is kinda like a closure." I knew this assumption is fundamentally wrong somehow and after a search online I didn't find really any analysis of this comparison.
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What's the best way to put a c-struct in an NSArray?
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NSValue doesn't only support CoreGraphics structures – you can use it for your own too. I would recommend doing so, as the class is probably lighter weight than NSData for simple data structures.
Simply use an expression like the following:
[NSValue valueWithBytes:&p objCType:@encode(M...
Explaining Apache ZooKeeper
I am trying to understand ZooKeeper, how it works and what it does. Is there any application which is comparable to ZooKeeper?
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Multiple returns from a function
Is it possible to have a function with two returns like this:
31 Answers
31
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When should I use a struct instead of a class?
...oosing Between Classes and Structures.
Basically, that page gives you a 4-item checklist and says to use a class unless your type meets all of the criteria.
Do not define a structure unless the
type has all of the following
characteristics:
It logically represents a single value,...
What is the difference between Serialization and Marshaling?
...ques (such as RPC), the term "Marshaling" is used but don't understand how it differs from Serialization. Aren't they both transforming objects into series of bits?
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