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c++ Programming Glossary: twiceWhat is the correct answer for cout << c++ << c;? http://stackoverflow.com/questions/10782863/what-is-the-correct-answer-for-cout-c-c statement cout c c the ostream.operator would be called twice first with ostream.operator c and later ostream.operator c ...
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array So not only is it immune the mispredictions it is also twice as fast as whatever VC and GCC can generate In other words ICC..
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol redefined. That's obvious its definition is being included twice However the above source1.cpp will compile without problems..
How to pass parameters correctly? http://stackoverflow.com/questions/15600499/how-to-pass-parameters-correctly acc asdasd 345 cc Obviously the credit card will be copied twice in this scenario. If I rewrite that constructor as Account std.. of troubles for instance moving from the same object twice So be careful not to put this in a loop and not to forward the..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line hits EOF . Why does it read the integer on the last line twice How to fix this Code #include iostream #include fstream using..
std::vector is so much slower than plain arrays? http://stackoverflow.com/questions/3664272/stdvector-is-so-much-slower-than-plain-arrays The whole thing completed in 14.626 seconds So array is twice as quick as vector. But after looking at the code in more detail.. more detail this is expected as you run across the vector twice and the array only once. Note when you resize the vector you..
Why should I avoid multiple inheritance in C++? http://stackoverflow.com/questions/406081/why-should-i-avoid-multiple-inheritance-in-c both from B and C. I encountered this kind of problem twice in 8 eights years and it is amusing to see because of How much.. for that because in C the parent class A was present twice in its grandchild class D and thus updating one parent field.. one parent field A field meant either updating them twice through B field and C field or have something goes silently..
Semantics of flags on basic_ios http://stackoverflow.com/questions/4258887/semantics-of-flags-on-basic-ios out of my misery and explain this so I never have to think twice again c input c faq share improve this question There are..
Does std::list::remove method call destructor of each removed element? http://stackoverflow.com/questions/4260464/does-stdlistremove-method-call-destructor-of-each-removed-element been released in the past. Deleting the same pointer twice yields undefined behavior . It becomes a dangling pointer after..
Testing stream.good() or !stream.eof() reads last line twice [duplicate] http://stackoverflow.com/questions/4324441/testing-stream-good-or-stream-eof-reads-last-line-twice stream.good or stream.eof reads last line twice duplicate Possible Duplicate Why is iostream eof inside a loop.. getline f line Use line here. But this reads the last line twice. Why does this happen and how do I fix it Something very similar..
http://stackoverflow.com/questions/4340396/does-the-c-standard-mandate-poor-performance-for-iostreams-or-am-i-just-deali check 0.99 ms 0.99 ms char 1.25 ms 1.24 ms EDIT Ran all twice to see how consistent the results were. Pretty consistent IMO...
Undefined Behavior and Sequence Points Reloaded http://stackoverflow.com/questions/4638364/undefined-behavior-and-sequence-points-reloaded If no why not After all the object i gets modified twice between consecutive sequence points. Please recall the rule..
Why copying stringstream is not allowed? http://stackoverflow.com/questions/6010864/why-copying-stringstream-is-not-allowed and low level APIs only once. How can your program read it twice or more Hence creating copy is not allowed but creating reference..
Pre & post increment operator behavior in C, C++, Java, & C# http://stackoverflow.com/questions/6457130/pre-post-increment-operator-behavior-in-c-c-java-c-sharp is unspecified and modifying the same object twice without an intervening sequence point is undefined behavior...
Why should `new` be used as little as possible? http://stackoverflow.com/questions/6500313/why-should-new-be-used-as-little-as-possible will likely crash as it uses delete on the same string twice. Using the modified version each Line instance will own its..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops saturates . Here two loops is slower because it has twice as much loop and branching overhead. I'm not sure exactly what's..
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