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c++ Programming Glossary: reWhy use iterators instead of array indices? http://stackoverflow.com/questions/131241/why-use-iterators-instead-of-array-indices some_iterator do stuff I'm told that the second way is preferred. Why exactly is this c stl iterator share improve this.. do stuff I'm told that the second way is preferred. Why exactly is this c stl iterator share improve this question.. way is preferred. Why exactly is this c stl iterator share improve this question The first form is efficient only if..
http://stackoverflow.com/questions/1461432/what-is-array-decaying is array decaying what is decaying of array is there any relation to the array pointers c c arrays pointers share.. is array decaying what is decaying of array is there any relation to the array pointers c c arrays pointers share improve.. relation to the array pointers c c arrays pointers share improve this question It's said that arrays decay into pointers...
http://stackoverflow.com/questions/1613230/uses-of-c-comma-operator it used in for loop statements but it's legal syntax anywhere. What uses have you found for it elsewhere if any c c comma.. syntax anywhere. What uses have you found for it elsewhere if any c c comma share improve this question C language.. have you found for it elsewhere if any c c comma share improve this question C language as well as C is historically..
What should main() return in C and C++? http://stackoverflow.com/questions/204476/what-should-main-return-in-c-and-c should main return in C and C What is the correct most efficient way to define.. should main return in C and C What is the correct most efficient way to define the main function in C and C.. in C and C int main or void main and why If int main then return 1 or return 0 There are numerous duplicates of this question..
What uses are there for “placement new”? http://stackoverflow.com/questions/222557/what-uses-are-there-for-placement-new uses are there for &ldquo placement new&rdquo Has anyone here ever used.. uses are there for &ldquo placement new&rdquo Has anyone here ever used C.. are there for &ldquo placement new&rdquo Has anyone here ever used C 's placement new If so what for It looks to me like..
Easy framework for OpenGL Shaders in C/C++ http://stackoverflow.com/questions/2795044/easy-framework-for-opengl-shaders-in-c-c Turns out that writing a C program which just takes a picture as a texture and applies let's say a gaussian blur as a fragment.. writing a C program which just takes a picture as a texture and applies let's say a gaussian blur as a fragment shader on.. it is not that easy You have to initialize OpenGL which are like 100 lines of code then understanding the GLBuffers etc....
What do 'statically linked' and 'dynamically linked' mean? http://stackoverflow.com/questions/311882/what-do-statically-linked-and-dynamically-linked-mean 'statically linked' and 'dynamically linked' often in reference to code written in C # but I don't know much of anything.. 'statically linked' and 'dynamically linked' often in reference to code written in C # but I don't know much of anything.. C # but I don't know much of anything about either what are they what exactly are they talking about and what are they linking..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom have any singular what is it question and answer so here it is. Here is a partial list of places where it was previously.. singular what is it question and answer so here it is. Here is a partial list of places where it was previously mentioned.. answer so here it is. Here is a partial list of places where it was previously mentioned What are your favorite C Coding..
Can we increase the re-usability of this key-oriented access-protection pattern? http://stackoverflow.com/questions/3324898/can-we-increase-the-re-usability-of-this-key-oriented-access-protection-pattern we increase the re usability of this key oriented access protection pattern.. we increase the re usability of this key oriented access protection pattern Can.. of this key oriented access protection pattern Can we increase the re usability for this key oriented access protection..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab are all the common undefined behaviour that a C programmer should.. Say like a i i c undefined undefined behavior c faq share improve this question Pointer Dereferencing a NULL pointer.. behavior c faq share improve this question Pointer Dereferencing a NULL pointer Dereferencing a pointer returned by..
http://stackoverflow.com/questions/4757565/c-forward-declaration following is mentioned add.cpp 1 int add int x int y 2 3 return x y 4 main.cpp 01 #include iostream 02 03 int add int x.. add int x int y 2 3 return x y 4 main.cpp 01 #include iostream 02 03 int add int x int y forward declaration using function.. std 08 cout The sum of 3 and 4 is add 3 4 endl 09 return 0 10 We ™d used a forward declaration so that the compiler..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c are the differences between pointer variable and reference variable.. are the differences between pointer variable and reference variable in C I.. are the differences between pointer variable and reference variable in C I know references are syntactic sugar..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope its scope I have the following code. int foo int a 5 return a int main int p foo cout p p 8 cout p And the code is just.. c memory management local variables dangling share How can it be Isn't the memory of a local variable inaccessible.. of a local variable inaccessible outside its function You rent a hotel room. You put a book in the top drawer of the bedside..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle register __m128d r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 rA rB rC rD rE rF Generate starting data. r0 _mm_set1_pd x r1 _mm_set1_pd y.. 1.4142135623730950488 rD _mm_set1_pd 1.7320508075688772935 rE _mm_set1_pd 0.57735026918962576451 rF _mm_set1_pd 0.70710678118654752440.. r0 _mm_mul_pd r0 rC r1 _mm_add_pd r1 rD r2 _mm_mul_pd r2 rE r3 _mm_sub_pd r3 rF r4 _mm_mul_pd r4 rC r5 _mm_add_pd r5 rD..
http://stackoverflow.com/questions/16228509/boost-asio-tcp-socket-write-data-different-from-data-in-buffer-possible-thre 1 15 2 msg_controllen 0 msg_flags 0 MSG_NOSIGNAL 1 EAGAIN Resource temporarily unavailable epoll_wait 4 EPOLLOUT u32 167539936.. 15 which means that's what was in the transfer_data vector Re EDIT Finally I inserted a boost this_thread sleep boost posix_time..
using catch(…) (ellipsis) for post-mortem analysis http://stackoverflow.com/questions/2183113/using-catch-ellipsis-for-post-mortem-analysis You may want to log something it seems polite. throw Re throw the exception so OS gives you a debug opportunity. will..
How do I bit shift a long by more than 32 bits? http://stackoverflow.com/questions/2404439/how-do-i-bit-shift-a-long-by-more-than-32-bits just not possible J c c share improve this question Re try this using a variable of type uint64_t from stdint.h instead..
Deriving an abstract class from concrete class http://stackoverflow.com/questions/310408/deriving-an-abstract-class-from-concrete-class class pure virtual share improve this question Re Peach from Apple Don't do it if Apple is a value class i.e... class Fruit perhaps and derive Apple and Peach from it. Re Tomato from Berry Same as above plus Avoid because it's unusual..
Multiple Inheritance Template Class http://stackoverflow.com/questions/3360892/multiple-inheritance-template-class messageB version Build started Project main Configuration Release Win32 Compiling... main.cpp . main.cpp 21 error C2385 ambiguous.. parameters are temporaries and thus const r values . Re writting the main as int main A aa messageA mA messageA mB aa.submit..
Open source C++ library for vector mathematics http://stackoverflow.com/questions/362928/open-source-c-library-for-vector-mathematics own. I like that. c math share improve this question Re check that ol'good friend of C programmers called Boost . It..
std::vector is so much slower than plain arrays? http://stackoverflow.com/questions/3664272/stdvector-is-so-much-slower-than-plain-arrays Or have I just busted this performance myth Edit I'm using Release mode in MSVS2005. In MSVC #define _SECURE_SCL 0 reduces.. the vector and calling the constructor on each member. Re Arranging the code slightly so that the vector only initializes..
return statement vs exit() in main() http://stackoverflow.com/questions/461449/return-statement-vs-exit-in-main no destructor will be called for my locally scoped objects Re read that. exit does not return . That means that once I call..
Passing a C++ complex array to C http://stackoverflow.com/questions/5020076/passing-a-c-complex-array-to-c the data as an array of double double a such that a 0 Re c 0 a 1 Im c 0 a 2 Re c 1 etc. What is the best safe way to.. of double double a such that a 0 Re c 0 a 1 Im c 0 a 2 Re c 1 etc. What is the best safe way to pass such data Is casting..
C# Marshalling double* from C++ DLL? http://stackoverflow.com/questions/5072340/c-sharp-marshalling-double-from-c-dll extern C __declspec dllexport double fft double dataReal double dataImag ... The function calculates the FFT of the.. array with the real an imaginary components interleaved Re Im Re Im ... I'm not sure how to call this function in C#. What.. with the real an imaginary components interleaved Re Im Re Im ... I'm not sure how to call this function in C#. What I'm..
How to Build a custom simple DNS server in C/C++ [closed] http://stackoverflow.com/questions/649618/how-to-build-a-custom-simple-dns-server-in-c-c DNS server particularly if you want decent security. Recent DNS attacks have shown that the cacheing function in recursive.. in recursive DNS servers is particularly vulnerable. Re evaluate whether you actually need local cacheing of your own...
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