¡@
c++ Programming Glossary: expensiveWhat are copy elision and return value optimization? http://stackoverflow.com/questions/12953127/what-are-copy-elision-and-return-value-optimization implemented by most compilers to prevent extra potentially expensive copies in certain situations. It makes returning by value or..
How to pass parameters correctly? http://stackoverflow.com/questions/15600499/how-to-pass-parameters-correctly to store the value in a data member . In case moves are expensive for objects of type my_class then you may consider overloading..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code caches and so forth. The basic mantra is fast memory is expensive . This is the core reason for the advanced caching we see today...
Why should exceptions be used conservatively? http://stackoverflow.com/questions/1744070/why-should-exceptions-be-used-conservatively Exceptions typically require at least one of the following expensive operations kernel calls or other system API invocations to manage..
Is there a performance difference between i++ and ++i in C++? http://stackoverflow.com/questions/24901/is-there-a-performance-difference-between-i-and-i-in-c associated copy constructor. If the copy constructor is expensive then this can have a significant performance impact. Thanks..
Is it better in C++ to pass by value or pass by constant reference? http://stackoverflow.com/questions/270408/is-it-better-in-c-to-pass-by-value-or-pass-by-constant-reference should be able to figure out when passing by value is expensive and implicitly convert the call to use a const ref. In theory...
http://stackoverflow.com/questions/2795023/c-template-typedef Vector public Matrix N 1 Is there a solution or a not too expensive workaround best practice for it Thanks in advance c templates..
Easy framework for OpenGL Shaders in C/C++ http://stackoverflow.com/questions/2795044/easy-framework-for-opengl-shaders-in-c-c point is that compiling and linking shaders is a fairly expensive process so you normally want to manage their lifetime to avoid..
Why does C++ compilation take so long? http://stackoverflow.com/questions/318398/why-does-c-compilation-take-so-long grow into many thousand characters that can become fairly expensive . And of course they exacerbate the problems with header files..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c that we copy str and actually return the copy. This can be expensive and we might want to avoid the cost of copying it. Therefore.. implementation of strings copying a string tends to be inexpensive. Secondly due to what's known as named return value optimisation.. return value optimisation returning by value may not be expensive since the compiler can do some cleverness to speed things up...
http://stackoverflow.com/questions/4421706/operator-overloading If a function object absolutely needs to use data which is expensive to copy it is better to store that data elsewhere and have the..
How many and which are the uses of “const” in C++? http://stackoverflow.com/questions/455518/how-many-and-which-are-the-uses-of-const-in-c by reference instead of by value to prevent possibly expensive or impossible by value passing void PrintIt Object const obj..
http://stackoverflow.com/questions/6319146/c11-introduced-a-standardized-memory-model-what-does-it-mean-and-how-is-it-g Now on a modern CPU ensuring sequential consistency can be expensive. In particular the compiler is likely to emit full blown memory..
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 you just vacated. It doesn't because again that would be expensive. An implementation of C is not required to ensure that when..
while (1) Vs. for (;;) Is there a speed difference? http://stackoverflow.com/questions/885908/while-1-vs-for-is-there-a-speed-difference of the loop is going to be a few thousand times more expensive than the loop itself anyway so who cares share improve this..
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 the number of system calls which are typically relatively expensive. However since the FILE based stdio and iostreams often have..
Example for boost shared_mutex (multiple reads/one write)? http://stackoverflow.com/questions/989795/example-for-boost-shared-mutex-multiple-reads-one-write Right now a mutex keeps access to that data safe but it's expensive because I would like multiple threads to be able to read simultaneously..
|