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What is the python “with” statement designed for?
...The with statement can thus be used in ways similar to the RAII pattern in C++: some resource is acquired by the with statement and released when you leave the with context.
Some examples are: opening files using with open(filename) as fp:, acquiring locks using with lock: (where lock is an instance...
NUnit vs. MbUnit vs. MSTest vs. xUnit.net [closed]
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Nunit doesnt work well with mixed-mode projects in C++ so I had to drop it
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Has anyone actually implemented a Fibonacci-Heap efficiently?
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The Boost C++ libraries include an implementation of Fibonacci heaps in boost/pending/fibonacci_heap.hpp. This file has apparently been in pending/ for years and by my projections will never be accepted. Also, there have been bugs in...
Performance of Java matrix math libraries? [closed]
...with itself. The results are as follows.
Using multithreaded ATLAS with C/C++, Octave, Python and R, the time taken was around 4 seconds.
Using Jama with Java, the time taken was 50 seconds.
Using Colt and Parallel Colt with Java, the time taken was 150 seconds!
Using JBLAS with Java, the time t...
Const before or const after?
...hink putting it on the right makes more sense. You generally read types in C++ from right-to-left, for example Object const * is a pointer to a const Object. If you put the const on the left, it would read as a pointer to an Object that is const, which doesn't really flow very well.
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What is the bit size of long on 64-bit Windows?
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It is not clear if the question is about the Microsoft C++ compiler or the Windows API. However, there is no [c++] tag so I assume it is about the Windows API. Some of the answers have suffered from link rot so I am providing yet another link that can rot.
For information abou...
How many levels of pointers can we have?
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The C++ standard "recommends" that an implementation support at least 256. (Readability recommends that you not exceed 2 or 3, and even then: more than one should be exceptional.)
– James Kanze
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Does C have a “foreach” loop construct?
... printf("value: %d\n", *v);
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Edit: In case you are also interested in C++ solutions, C++ has a native for-each syntax called "range based for"
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How does the String class override the + operator?
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No, it doesn't. Operator overloading (as in C++ and some languages) has some drawbacks and Java designers felt that it's somewhat a confusing concept and omitted it from Java. To me, an object- oriented language must have the prime concepts of inheritance, Polymorphism...
What is this weird colon-member (“ : ”) syntax in the constructor?
...ber initialization list. You should find information about it in any good C++ book.
You should, in most cases, initialize all member objects in the member initialization list (however, do note the exceptions listed at the end of the FAQ entry).
The takeaway point from the FAQ entry is that,
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