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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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Xml Namespace breaking my xpath! [duplicate]
... there my xPath finds nothing
If you cannot register a namespace binding and cannot use (assuming the registered prefix is "x"):
/x:List/x:Fields/x:Field
then there is another way:
/*[name()='List']/*[name()='Fields']/*[name()='Field']
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What is the Scala identifier “implicitly”?
...ave seen a function named implicitly used in Scala examples. What is it, and how is it used?
3 Answers
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Is a URL allowed to contain a space?
...he space
character is unsafe because significant spaces may disappear and
insignificant spaces may be introduced when URLs are transcribed or
typeset or subjected to the treatment of word-processing programs.
The characters "<" and ">" are unsafe because they are used as th...
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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Why would you use String.Equals over ==? [duplicate]
I recently was introduced to a large codebase and noticed all string comparisons are done using String.Equals() instead of ==
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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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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...
Why is address zero used for the null pointer?
...ll pointer in C source while represented differently at runtime. The C++ standard has a note that makes clear that converting "an integral constant expression with value zero always yields a null pointer, but converting other expressions that happen to have value zero need not yield a null pointer"....