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Is 'switch' faster than 'if'?
...ntly increase performance in some scenarios, is as general as a switch is, and does not result in greater generated code size. But to see that, your test code would need a LOT more branches to see any difference.
To answer your specific questions:
Clang generates one that looks like this:
test_s...
Best way to define private methods for a class in Objective-C
I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs deal with private methods.
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In Vim, I'd like to go back a word. The opposite of `w`
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Use b to go back a word.
You may also want to check out W and B to advance/go back a WORD (which
consists of a sequence of non-blank characters separated with white space, according to :h WORD).
share
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In-Place Radix Sort
...rt for DNA. It's written in D because that's the language that I use most and therefore am least likely to make silly mistakes in, but it could easily be translated to some other language. It's in-place but requires 2 * seq.length passes through the array.
void radixSort(string[] seqs, size_t base...
Difference between passing array and array pointer into function in C
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First, some standardese:
6.7.5.3 Function declarators (including prototypes)
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7 A declaration of a parameter as ‘‘array of type’’ shall be adjusted to ‘‘qualified pointer to
type’’, where the type qualifiers (if any) a...
When should I use the Visitor Design Pattern? [closed]
...dmit, I just don't get it. I read the wikipedia article for the pattern and I understand its mechanics but I'm still confused as to when I'd use it.
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What are the differences between concepts and template constraints?
...w what are the semantic differences between the C++ full concepts proposal and template constraints (for instance, constraints as appeared in Dlang or the new concepts-lite proposal for C++1y ).
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System.currentTimeMillis vs System.nanoTime
... movement is directly proportional to the elapsed time since the last call and I want to be as precise as possible.
10 Answ...
Are non-synchronised static methods thread safe if they don't modify static class variables?
...lity, etc.
This method only operates on parameters, which reside on stack and references to immutable objects on heap. Stack is inherently local to the thread, so no sharing of data occurs, ever.
Immutable objects (String in this case) are also thread-safe because once created they can't be change...
Get records with max value for each group of grouped SQL results
...alue for.
You avoid complicated subqueries that try to find the max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL synta...