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What does Maven do, in theory and in practice? When is it worth to use it? [closed]
I am about to start a Java project just for practice. I've read about Maven, but I don't actually understand when it is meant to be used.
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What's the difference between JPA and Spring Data JPA?
...ween Spring Data-JPA and JPA. I know about JPA that it is a specification for persisting the Java Objects to a relational database using popular ORM technology.
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CentOS 64 bit bad ELF interpreter
...trying to install a 32-bit application on a 64-bit machine and got this error:
8 Answers
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Different floating point result with optimization enabled - compiler bug?
The below code works on Visual Studio 2008 with and without optimization. But it only works on g++ without optimization (O0).
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Should an Enum start with a 0 or a 1?
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Framework Design Guidelines:
✔️ DO provide a value of zero on simple enums.
Consider calling the value something like "None." If such a value is not appropriate for this particular enum, the most common default value f...
How do I use reflection to call a generic method?
...generic = method.MakeGenericMethod(myType);
generic.Invoke(this, null);
For a static method, pass null as the first argument to Invoke. That's nothing to do with generic methods - it's just normal reflection.
As noted, a lot of this is simpler as of C# 4 using dynamic - if you can use type infere...
Java packages com and org
What are the meaning of the packages org and com in Java?
4 Answers
4
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How to tell whether a point is to the right or left side of a line
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Use the sign of the determinant of vectors (AB,AM), where M(X,Y) is the query point:
position = sign((Bx - Ax) * (Y - Ay) - (By - Ay) * (X - Ax))
It is 0 on the line, and +1 on one side, -1 on the other side.
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Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques
On iPhone, I perform a HTTP request using NSURLRequest for a chunk of data. Object allocation spikes and I assign the data accordingly. When I finish with the data, I free it up accordingly - however instruments doesn't show any data to have been freed!
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How do I use a Boolean in Python?
...some_decision:
checker = True
if checker:
# some stuff
[Edit]
For more information: http://docs.python.org/library/functions.html#bool
Your code works too, since 1 is converted to True when necessary.
Actually Python didn't have a boolean type for a long time (as in old C), and some pro...