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c++ Programming Glossary: givesHow do I convert between big-endian and little-endian values in C++? http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c rotate. Calling the intrinsics instead of rolling your own gives you the best performance and code density btw.. share improve..
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration unless it ... is a class name declaration ... . 3.1 3 then gives a few examples. Amongst them struct S int a int b defines S..
What is the equivalent of the C++ Pair<L,R> in Java? http://stackoverflow.com/questions/156275/what-is-the-equivalent-of-the-c-pairl-r-in-java In this thread on comp.lang.java.help Hunter Gratzner gives some arguments against the presence of a Pair construct in Java...
When should I write the keyword 'inline' for a function/method? http://stackoverflow.com/questions/1759300/when-should-i-write-the-keyword-inline-for-a-function-method small as in one liner functions in the header file as it gives the compiler more information to work with while optimizing..
Initializing private static members http://stackoverflow.com/questions/185844/initializing-private-static-members a private static data member in C I tried this but it gives me weird linker errors class foo private static int i int foo..
Size of character ('a') in C/C++ http://stackoverflow.com/questions/2172943/size-of-character-a-in-c-c of char sizeof char n return 0 No surprises both of them gives the output Size of char 1 Now we know that characters are represented..
What uses are there for “placement new”? http://stackoverflow.com/questions/222557/what-uses-are-there-for-placement-new you need even though you don't want to use it yet. Devex gives a good example Standard C also supports placement new operator..
Why is volatile not considered useful in multithreaded C or C++ programming? http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming are executed when the barrier is reached so it effectively gives us everything we need by itself making volatile unnecessary...
C++ Timer function to provide time in nano seconds http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds cout printf diff ' n' return 0 The above code gives the time in seconds I wish to get the same in nano seconds and..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom allocated copied and ready to be used. This is what gives us a strong exception guarantee for free we won't even enter..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward lvalue reference to A. Otherwise we deduce normally. This gives so called universal references . Why is this useful Because.. value category of the parameter. Putting these together gives us perfect forwarding template typename A void f A a E static_cast..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux I on both samples designated observation o 2 2 . This gives us new estimates of the frequency f of I according to this Prior..
What are access specifiers? Should I inherit with private, protected or public? http://stackoverflow.com/questions/5447498/what-are-access-specifiers-should-i-inherit-with-private-protected-or-public int main MyClass obj obj.a 10 Allowed obj.b 20 Not Allowed gives compiler error obj.c 30 Not Allowed gives compiler error Inheritance.. 20 Not Allowed gives compiler error obj.c 30 Not Allowed gives compiler error Inheritance and Access Specifiers Inheritance.. public void f Myclass obj obj.x 5 int main return 0 It gives an compilation error prog.cpp 4 error ˜int Myclass x is protected..
How to determine CPU and memory consumption from inside a process? http://stackoverflow.com/questions/63166/how-to-determine-cpu-and-memory-consumption-from-inside-a-process is a bit misleading here. In reality this parameter gives the Virtual Memory Size which is size of swap file plus installed..
How should I write ISO C++ Standard conformant custom new and delete operators? http://stackoverflow.com/questions/7194127/how-should-i-write-iso-c-standard-conformant-custom-new-and-delete-operators p1 was sub sequently passed to an operator delete . This gives us further important requirements Requirement #2 The memory..
What do single quotes do in C++ when used on multiple characters? http://stackoverflow.com/questions/7459939/what-do-single-quotes-do-in-c-when-used-on-multiple-characters about this code cout 'test' Note the single quotes. gives me an output of 1952805748 . My question Is the output an address..
Why can't variables be declared in a switch statement? http://stackoverflow.com/questions/92396/why-cant-variables-be-declared-in-a-switch-statement int newVal 42 break case ANOTHER_VAL ... break The above gives me the following error MSC initialization of 'newVal' is skipped..
std::endl is of unknown type when overloading operator<< http://stackoverflow.com/questions/1134388/stdendl-is-of-unknown-type-when-overloading-operator my_stream my_stream 10 heads Works but my_stream endl Gives compilation error error C2678 binary ' ' no operator found which..
std::vector::push_back a non-copyable object gives compiler error http://stackoverflow.com/questions/13800858/stdvectorpush-back-a-non-copyable-object-gives-compiler-error v.push_back std move other Fails to compile return 0 Gives errors usr lib gcc x86_64 redhat linux 4.7.2 .. .. .. .. include..
1D array decays to pointer, but 2D array doesn't do so, why? [duplicate] http://stackoverflow.com/questions/15295897/1d-array-decays-to-pointer-but-2d-array-doesnt-do-so-why i array i malloc 4 sizeof int for j 0 j 4 j array i j cntr Gives something like this array addr1 1 2 3 4 addr2 5 6 7 8 addr3.. i j int cntr 1 for i 0 i 3 i for j 0 j 4 j array i j cntr Gives something like this array 1 2 3 4 5 6 7 8 9 10 11 12 share..
How to compile C++ under Ubuntu Linux? http://stackoverflow.com/questions/1696300/how-to-compile-c-under-ubuntu-linux just typed make avishay and let make figure out the rest. Gives your executable a decent name too instead of a.out . share..
How do you use the non-default constructor for a member? http://stackoverflow.com/questions/2088944/how-do-you-use-the-non-default-constructor-for-a-member I have two classes class a public a int i class b public b Gives me an error here because it tries to find constructor a a a..
Why aren't static const floats allowed? http://stackoverflow.com/questions/2454019/why-arent-static-const-floats-allowed 1 Compiles static const float FLOAT_CONST 0.001f C2864 Gives the following error 1 c projects myproject Constant_definitions.h..
C/C++ with GCC: Statically add resource files to executable/library http://stackoverflow.com/questions/4864866/c-c-with-gcc-statically-add-resource-files-to-executable-library this question With imagemagick convert file.png data.h Gives something like data.h PNM . static unsigned char MagickImage..
How to create an auto startup c++ program http://stackoverflow.com/questions/557466/how-to-create-an-auto-startup-c-program improve this question Startup folder is clean enough. Gives the user the possibility to remove it if needed. share improve..
Eclipse CDT: Unresolved inclusion of stl header http://stackoverflow.com/questions/5977542/eclipse-cdt-unresolved-inclusion-of-stl-header inclusion problem. For example code like #include vector Gives Unresolved inclusion vector error in Eclipse IDE. C Builder..
http://stackoverflow.com/questions/6158760/recursive-friend-classes int i friend B B class B public B private int i friend C C Gives error prog.cpp 8 error invalid use of incomplete type ˜struct..
C++: Nested template classes error “explicit specialization in non-namespace scope” http://stackoverflow.com/questions/6301966/c-nested-template-classes-error-explicit-specialization-in-non-namespace-sco A2 ... template struct A2 1 ... int main A1 int A2 1 x Gives this error prog.cpp 7 13 error explicit specialization in non..
WCHAR to String, how do i do it? http://stackoverflow.com/questions/6907116/wchar-to-string-how-do-i-do-it NULL return strTo String retOne utf8_encode lpOutBuffer Gives error 'utf8_encode' cannot convert parameter 1 from 'LPVOID'..
http://stackoverflow.com/questions/72010/c-overload-resolution new B b A DoSomething Why this b DoSomething Why not this Gives compiler error. delete b return 0 c function overloading resolution..
cout vs printf — order of execution [duplicate] http://stackoverflow.com/questions/7356378/cout-vs-printf-order-of-execution to functions it prints This int k 3 printf d d d k k k Gives output as 4 4 4 because they are pushed into the stack as d..
Why compiler is not giving error when signed value is assigned to unsigned integer? - C++ http://stackoverflow.com/questions/765709/why-compiler-is-not-giving-error-when-signed-value-is-assigned-to-unsigned-integ int' signed unsigned mismatch On warning level 4. G Gives me the warning warning converting of negative value 0x00000000a'..
std::ostringstream printing the address of the c-string instead of its content http://stackoverflow.com/questions/8287188/stdostringstream-printing-the-address-of-the-c-string-instead-of-its-content std ostringstream std ostringstream some data .str n Gives the output Reference 0x804a03d Regular Syntax some data Semi..
Sequence-zip function for c++11? http://stackoverflow.com/questions/8511035/sequence-zip-function-for-c11 Y1 1 2 3 Y2 4 5 6 7 for x1 x2 in zip Y1 Y2 print x1 x2 Gives as output 1 4 2 5 3 6 c c 11 sequences share improve this..
Why doesn't emplace_back() use uniform initialization? http://stackoverflow.com/questions/8782895/why-doesnt-emplace-back-use-uniform-initialization S int x y int main std vector S v v.emplace_back 0 0 Gives the following errors when compiled with GCC In file included..
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