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c++ Programming Glossary: compareMost efficient way to erase duplicates and sort a c++ vector? http://stackoverflow.com/questions/1041620/most-efficient-way-to-erase-duplicates-and-sort-a-c-vector be better off creating a set to do the dirty work. Let's compare three approaches Just using vector sort unique sort vec.begin..
Is there a production ready lock-free queue or hash implementation in C++ http://stackoverflow.com/questions/1164023/is-there-a-production-ready-lock-free-queue-or-hash-implementation-in-c file atomic.hpp the implementations for the necessary compare and swap operations on the systems I am familiar with look sound...
“C subset of C++” -> Where not ? examples? [closed] http://stackoverflow.com/questions/1201593/c-subset-of-c-where-not-examples languages share improve this question If you compare C89 with C then here are a couple of things No tentative definitions..
What is the difference between NULL, '\0' and 0 http://stackoverflow.com/questions/1296843/what-is-the-difference-between-null-0-and-0 is just described in different ways. If a pointer is being compared to the constant literal 0 then this is a check to see if the.. for a null pointer if pointer NULL NULL is defined to compare equal to a null pointer. It is implementation defined what the..
Most effective way for float and double comparison http://stackoverflow.com/questions/17333/most-effective-way-for-float-and-double-comparison double comparison What would be the most efficient way to compare two double or two float values Simply doing this is not correct.. to waste processing. Does anyone know a smarter float comparer c algorithm optimization floating point share improve this.. the cosine of angles and the length of lines Using such a compare function to sort items in a collection. In this case using the..
Do you use NULL or 0 (zero) for pointers in C++? http://stackoverflow.com/questions/176989/do-you-use-null-or-0-zero-for-pointers-in-c NULL you cannot logically use p q you need to explicitly compare against NULL unless you assume NULL is zero in which case why..
Why should I not try to use “this” value after “delete this”? http://stackoverflow.com/questions/1866461/why-should-i-not-try-to-use-this-value-after-delete-this But why is restriction 4 there that I must not examine it compare it with another pointer compare it with NULL print it cast it.. that I must not examine it compare it with another pointer compare it with NULL print it cast it do anything with it I mean this..
http://stackoverflow.com/questions/2910979/how-is-base-of-works rule is that user defined conversion sequences can only be compared if they use the same conversion function or constructor according.. to take the second conversion function. Since we can compare them which one is better The rule is that the better conversion..
Why does C++ compilation take so long? http://stackoverflow.com/questions/318398/why-does-c-compilation-take-so-long so long Compiling a C file takes a very long time when compared to C# Java. It takes significantly longer to compile a C file.. names adding a lot of extra work to the linker. It has to compare a lot of symbol names and if these names can grow into many..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three class such as std string already does it for you. Just compare the simple code using a std string member to the convoluted..
Operator overloading : member function vs. non-member function? http://stackoverflow.com/questions/4622330/operator-overloading-member-function-vs-non-member-function is the 'this' pointer. So no standard exists to compare them. On the other hand overloaded operator declared as a friend.. pass two arguments of the same type and hence they can be compared. My question is that when i can still compare a pointer's lvalue.. they can be compared. My question is that when i can still compare a pointer's lvalue to a reference why are friends preferred..
What C++ Smart Pointer Implementations are available? http://stackoverflow.com/questions/5026197/what-c-smart-pointer-implementations-are-available of smart pointers in C out there and how do they compare Just simple pros and cons or exceptions and gotchas to something..
C++11 features in Visual Studio 2012 http://stackoverflow.com/questions/7421825/c11-features-in-visual-studio-2012 enums Standard layout and trivial types Atomics Strong compare and exchange Bi directional fences Data dependency ordering..
Why doesn't Java offer operator overloading? [closed] http://stackoverflow.com/questions/77718/why-doesnt-java-offer-operator-overloading the comparison will produce 'equal' since the object will compare equal to itself. The difference between copies and references..
What is “rvalue reference for *this”? http://stackoverflow.com/questions/8610571/what-is-rvalue-reference-for-this the object to be operated on. Why do we even need to compare member and non member functions Operator overloading that's..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python lines from stdin much slower in C than Python I wanted to compare reading lines of string input from stdin using Python and C.. seconds. LPS 21152829 Again it's a bit silly for me to compare C fgets cin and the first python code on the one hand to wc..
Portable Compare And Swap (atomic operations) C/C++ library? http://stackoverflow.com/questions/1158374/portable-compare-and-swap-atomic-operations-c-c-library Compare And Swap atomic operations C C library Is there any small library..
How to find the kth largest element in the union of two sorted arrays? http://stackoverflow.com/questions/11679364/how-to-find-the-kth-largest-element-in-the-union-of-two-sorted-arrays using Eigen VectorXi template class RandomIterator class Compare typename std iterator_traits RandomIterator value_type nsmallest.. lasta RandomIterator firstb RandomIterator lastb size_t n Compare less assert n static_cast size_t lasta firsta lastb firstb if.. #include iterator template class RandomIterator class Compare typename std iterator_traits RandomIterator value_type nsmallest..
http://stackoverflow.com/questions/12135518/is-faster-than fld QWORD PTR esp 32 fld QWORD PTR esp 40 fucomip st st 1 Compare ST 0 and ST 1 and set CF PF ZF in EFLAGS fstp st 0 seta al ..
Are “anonymous structs” standard? And, really, what *are* they? http://stackoverflow.com/questions/14248044/are-anonymous-structs-standard-and-really-what-are-they NONAMELESSUNION before including the Windows header files. Compare with the standard functionality of anonymous unions which do..
What happens if you static_cast invalid value to enum class? http://stackoverflow.com/questions/18195312/what-happens-if-you-static-cast-invalid-value-to-enum-class to be at least 127 per Annex E of the C99 Standard. Compare to expr 4 If during the evaluation of an expression the result..
Float addition promoted to double? http://stackoverflow.com/questions/1839225/float-addition-promoted-to-double that will work as expected for floating point types. Compare rounded values or use constructs like abs a b tolerance instead...
Dynamically allocating an array of objects http://stackoverflow.com/questions/255612/dynamically-allocating-an-array-of-objects and covers all the problems associated with exceptions. Compare the following class with the definition of A below. class A..
Why do some people prefer “T const&” over “const T&”? http://stackoverflow.com/questions/2640446/why-do-some-people-prefer-t-const-over-const-t in reality both should be as easy to understand . Compare const T p pointer to T that is const T const p pointer to const..
How do exceptions work (behind the scenes) in c++ http://stackoverflow.com/questions/307610/how-do-exceptions-work-behind-the-scenes-in-c until it gets to that handler. Actually call the handler. Compare that with the cost of simply returning a value and you see why..
How do breakpoints work in C++ code? http://stackoverflow.com/questions/3915511/how-do-breakpoints-work-in-c-code on the required place Wait until breakpoint exception hits Compare exception address to the list of breakpoint to determine which..
Brute-force, single-threaded prime factorization http://stackoverflow.com/questions/3918968/brute-force-single-threaded-prime-factorization algorithm prime factoring share improve this question Compare such an approach to a pre generated sieve. Modulo is expensive..
How does does ifstream eof() work? http://stackoverflow.com/questions/4533063/how-does-does-ifstream-eof-work 1 is get 's way of saying you've reached the end of file. Compare it using the std char_traits char eof or std istream traits_type..
Does it matter where I place the asterisk when declaring pointers in C++? http://stackoverflow.com/questions/5449908/does-it-matter-where-i-place-the-asterisk-when-declaring-pointers-in-c only variable x is declared as a pointer char x y Compare that with the following which makes it much more clear which..
Compare std::wstring and std::string http://stackoverflow.com/questions/7141260/compare-stdwstring-and-stdstring std wstring and std string How can I compare a wstring such..
Returning Large Objects in Functions http://stackoverflow.com/questions/753312/returning-large-objects-in-functions Large Objects in Functions Compare the following two pieces of code the first using a reference..
Efficient way of storing Huffman tree http://stackoverflow.com/questions/759707/efficient-way-of-storing-huffman-tree from the tree and the output will be 92 bits or 12 bytes. Compare that to the 20 8 bytes necessary to store the original 20 characters..
Should function declarations include parameter names? http://stackoverflow.com/questions/7891526/should-function-declarations-include-parameter-names Look at the constructor documentation. Compare this Parameters x1 X coordinate of the top left corner of the..
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