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c++ Programming Glossary: typicalWhy isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member that are multiples of their sizes. Here's an example using typical settings for an x86 processor struct X short s 2 bytes 2 padding..
Problems with Singleton Pattern http://stackoverflow.com/questions/1392315/problems-with-singleton-pattern it can be an issue with regards to memory management In typical singleton implementations once you create the singleton you.. Our application will never use two databases they typically think. But there will come a time when it may make sense to..
Common reasons for bugs in release version not present in debug mode http://stackoverflow.com/questions/1762088/common-reasons-for-bugs-in-release-version-not-present-in-debug-mode in release version not present in debug mode What are the typical reasons for bugs and abnormal program behavior that manifest..
How to get main window handle from process id? http://stackoverflow.com/questions/1888863/how-to-get-main-window-handle-from-process-id inefficient but it's not as bad as you might expect in a typical case you might have a dozen top level windows to walk through.....
Is it good practice to NULL a pointer after deleting it? http://stackoverflow.com/questions/1931126/is-it-good-practice-to-null-a-pointer-after-deleting-it are you using a pointer in the first place I can see two typical reasons You simply wanted something allocated on the heap. In..
How can I iterate over an enum? http://stackoverflow.com/questions/261963/how-can-i-iterate-over-an-enum in a C enum c enums share improve this question The typical way is as follows enum Foo One Two Three Last for int fooInt.. that an enum is not really meant to iterate through. The typical way to deal with an enum is to use it in a switch statement...
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new The following values are non zero constant odd large and atypical Non zero values help find bugs assuming zero filled data. Constant.. lower bit. Large numbers byte values at least are less typical and are good at finding bad addresses. Atypical values i.e... are less typical and are good at finding bad addresses. Atypical values i.e. not too often are good since they typically cause..
http://stackoverflow.com/questions/4340396/does-the-c-standard-mandate-poor-performance-for-iostreams-or-am-i-just-deali performance tests on the internal buffering applies to the typical formatted I O if iostreams can't keep the disk controller supplied.. can be avoided. With a slightly smarter linker than is typically used it is possible to remove some of these inefficiencies...
openCV: How to split a video into image sequence? http://stackoverflow.com/questions/4350698/opencv-how-to-split-a-video-into-image-sequence question looks more like a send me the codez demand than a typical StackOverflow question whereby the OP provides detailed information.. code should look like that and the implementation would typically require the OpenCV methods mentioned. myCapt cvCreateFileCapture..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome FName array overhead The tttt area is overhead there will typically be more of this for various types of runtimes and languages.. 1234Home 0028 5678Cabin 0000 ^ no link It is typical to store an address that points nowhere as a zero address. In.. is just a variable holding a memory address. You can typically ask the programming language to give you its number but most..
http://stackoverflow.com/questions/583255/c-code-in-header-files seem to be exploding but it is certainly a lot longer than typical and can add up quite quickly. When dealing with a large project...
http://stackoverflow.com/questions/5854581/polymorphism-in-c to inlining or at least compile time resolved calls. As is typical in C the programmer is given a lot of freedom to control the..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords depend by their value and or their type. So we have with typical examples appended Dependent types e.g a type template parameter..
Building multiple executables with similar rules http://stackoverflow.com/questions/7123431/building-multiple-executables-with-similar-rules that gives the general rules This seems to go against the typical way Scons expects projects to be organised what are the potential..
Is there any reason to use C instead of C++ for embedded development? http://stackoverflow.com/questions/812717/is-there-any-reason-to-use-c-instead-of-c-for-embedded-development and a number of comments mention the 4 Kb of RAM . For a typical embedded processor the amount of RAM is mostly unrelated to..
What issues can I expect compiling C code with a C++ compiler? http://stackoverflow.com/questions/861517/what-issues-can-i-expect-compiling-c-code-with-a-c-compiler memory Foo foo foo malloc sizeof foo The above is typical C code but it'll need a cast in C Foo foo foo Foo malloc sizeof..
http://stackoverflow.com/questions/871234/circular-lock-free-buffer on the data than trigger events based on the result. In a typical multi threaded producer consumer setup I will have multiple.. will block when there are no unprocessed updates. Using a typical concurrent queue with reader writer lock will work nicely but..
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 think this performance hit from std string getline is typical and reasonable. Edit 4 was Final Edit Solution Adding cin.sync_with_stdio.. chunks. This reduces the number of system calls which are typically relatively expensive. However since the FILE based stdio and..
When is a C++ destructor called? http://stackoverflow.com/questions/10081429/when-is-a-c-destructor-called list That's up to the implementation of the linked list. Typical collections destroy all their contained objects when they are..
http://stackoverflow.com/questions/1335561/c-exception-class-design character array of fixed length rather than a std string. Typical implementations of std exception dynamically allocate the reason..
Generate Random numbers without using any external functions http://stackoverflow.com/questions/15038174/generate-random-numbers-without-using-any-external-functions algorithm data structures share improve this question Typical pseudo random number generators calculate new numbers based..
Does using callbacks in C++ increase coupling? http://stackoverflow.com/questions/1727824/does-using-callbacks-in-c-increase-coupling you are doing OO and writing C . Effo UPD@2009nov13 Typical cases Framework Events System or Concurrent Programming Model..
C++ Visual Studio character encoding issues http://stackoverflow.com/questions/1857668/c-visual-studio-character-encoding-issues window get corrupted. Ditto input from the output window. Typical character encoding issue I enter ANSI get UTF 8 in return or..
How does QDebug() << stuff; add a newline automatically? http://stackoverflow.com/questions/2179623/how-does-qdebug-stuff-add-a-newline-automatically const do nothing with the manipulator return this #endif Typical usage debug stuff more stuff std endl But I'd like not to have..
http://stackoverflow.com/questions/2460387/hash-table-v-s-stl-map-in-c pairs c hashtable hashmap share improve this question Typical STL implementations are based on Red Black trees. C TR1 provides..
Is it more efficient to return a const reference http://stackoverflow.com/questions/275795/is-it-more-efficient-to-return-a-const-reference object whose scope is not limited by the function context. Typical example is a custom operator std ostream operator std ostream..
What is the C++ equivalent of java.lang.Object x = new Foo()? http://stackoverflow.com/questions/4233123/what-is-the-c-equivalent-of-java-lang-object-x-new-foo non POD type objects. As the documentation states it best Typical solutions feature the dynamic allocation of objects which are..
http://stackoverflow.com/questions/500493/c-equivalent-of-instanceof a necessary thing. It's generally a sign of poor design. Typical workarounds is putting the special behaviour for the class you..
Windows 7 timing functions - How to use GetSystemTimeAdjustment correctly? http://stackoverflow.com/questions/7685762/windows-7-timing-functions-how-to-use-getsystemtimeadjustment-correctly typedef struct UINT wPeriodMin UINT wPeriodMax TIMECAPS Typical values are 1 ms for wPeriodMin and 1 000 000 ms for wPeriodMax...
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