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c++ Programming Glossary: manyWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array since the branch consecutively goes the same direction many times. Even a simple saturating counter will correctly predict..
Do-While and if-else statements in C/C++ macros http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macros While and if else statements in C C macros In many C C macros I'm seeing the code of the macro wrapped in what..
What are the rules about using an underscore in a C++ identifier? http://stackoverflow.com/questions/228783/what-are-the-rules-about-using-an-underscore-in-a-c-identifier link to the POSIX 2004 reserved symbols and notes 'that many other reserved prefixes and suffixes ... can be found there'...
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior that do not behave in a predictable way even though many C compilers will not report any errors in the program Let's..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom change when C 11 is used Although it's been mentioned in many places we didn't have any singular what is it question and answer.. While one could just as easily do the following and indeed many naive implementations of the idiom do dumb_array operator const..
When should static_cast, dynamic_cast and reinterpret_cast be used? http://stackoverflow.com/questions/332030/when-should-static-cast-dynamic-cast-and-reinterpret-cast-be-used call explicit conversion functions or implicit ones . In many cases explicitly stating static_cast isn't necessary but it's..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special or protected non static data members . You can have as many private and protected member functions but not constructors.. member functions but not constructors as well as as many private or protected static data members and member functions.. Array4 is a global array int array 2 1 2 3 4 ERROR too many initializers Now let's see how aggregate classes can be initialized..
http://stackoverflow.com/questions/4421706/operator-overloading Note The answers were given in a specific order but since many users sort answers according to votes rather than the time they..
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 Why are pointers such a leading factor of confusion for many new and even old college level students in C or C Are there.. improve this question Pointers is a concept that for many can be confusing at first in particular when it comes to copying..
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 the name is qualified by the keyword typename. There are many dependent names for which typename is not necessary because..
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 has checked out. So let's think about the stack. In many operating systems you get one stack per thread and the stack.. is very easy to break them accidentally. I certainly have many times. And worse the problem often only surfaces when memory.. stored on the stack How does virtual memory work And many more topics in how the C# memory manager works. Many of these..
Where do I find the current C or C++ standard documents? http://stackoverflow.com/questions/81656/where-do-i-find-the-current-c-or-c-standard-documents do I find the current C or C standard documents For many questions especially for C related ones the answer seems to..
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters? http://stackoverflow.com/questions/11107608/whats-wrong-with-c-wchar-t-and-wstrings-what-are-some-alternatives-to-wide fixed than if you try to stick to UTF 32 with NFC or NFKC. Many platforms use UTF 8 as their native char encoding and many programs..
Why 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 data members are optimally aligned for better performance. Many processors perform best when fundamental data types are stored..
Get the IP Address of local computer http://stackoverflow.com/questions/122208/get-the-ip-address-of-local-computer in the form 192.168.0.255 for my particular case Edit Many answers were not giving the results I expected because I had..
Create registry entry to associate file extension with application in C++ http://stackoverflow.com/questions/1387769/create-registry-entry-to-associate-file-extension-with-application-in-c application used when the file is double clicked. Many extensions may have the same file type. That mapping is done.. Very handy. Now a quick word about which hive to use. Many file association examples online including ones on MSDN show..
Why should exceptions be used conservatively? http://stackoverflow.com/questions/1744070/why-should-exceptions-be-used-conservatively destructors interlocking of threads Hard to analyze Many of the problems of the goto statement apply to exceptions. They..
C++ delete - It deletes my objects but I can still access the data? http://stackoverflow.com/questions/1930459/c-delete-it-deletes-my-objects-but-i-can-still-access-the-data was called the data wasn't actually deleted from the heap. Many identical trials show it is always the same specific blocks..
http://stackoverflow.com/questions/213907/c-stdendl-vs-n &ldquo std endl&rdquo vs &ldquo n&rdquo Many C books contain example code like this... std cout Test line..
Why can't C++ be parsed with a LR(1) parser? http://stackoverflow.com/questions/243383/why-cant-c-be-parsed-with-a-lr1-parser and found this statement in wikipedia's LR parsing page Many programming languages can be parsed using some variation of..
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 lying around they may not be 100 correct or coherent . Many of these values are defined in vc crt src dbgheap.c The following..
What techniques can be used to speed up C++ compilation times? http://stackoverflow.com/questions/373142/what-techniques-can-be-used-to-speed-up-c-compilation-times of caching techniques to speed things up. Use Parallelism Many compilers IDEs support using multiple cores CPUs to do compilation..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers can figure out if something has the necessary iterator Many thanks Update and solution After raising this problem again..
Is there a C pre-processor which eliminates #ifdef blocks based on values defined/undefined? http://stackoverflow.com/questions/525283/is-there-a-c-pre-processor-which-eliminates-ifdef-blocks-based-on-values-define large ancient code base with lots of conditional code. Many of the conditions no longer apply the OLDUNIX platform for example..
http://stackoverflow.com/questions/5450159/type-erasure-techniques of your class inside an interface based class hierarchy. Many Boost libraries do this for example Boost.Any does this to hide..
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 And many more topics in how the C# memory manager works. Many of these articles are also germane to C programmers http blogs.msdn.com..
Why would one replace default new and delete operators? http://stackoverflow.com/questions/7149461/why-would-one-replace-default-new-and-delete-operators . To compensate for suboptimal memory alignment in new Many computer architectures require that data of particular types..
I don't want my Excel Add-In to return an array (instead I need a UDF to change other cells) http://stackoverflow.com/questions/8520732/i-dont-want-my-excel-add-in-to-return-an-array-instead-i-need-a-udf-to-change dates. Anyone know if this is possible Or impossible Many thanks c arrays excel add in excel addins share improve this..
What is “rvalue reference for *this”? http://stackoverflow.com/questions/8610571/what-is-rvalue-reference-for-this const and volatile and ref qualifiers and . Note Many standard quotes and overload resolution explanation after here..
What XML parser should I use in C++? http://stackoverflow.com/questions/9387610/what-xml-parser-should-i-use-in-c element by common properties using a standardized syntax. Many XML libraries offer XPath support. There are effectively three..
Is it safe to delete a void pointer? http://stackoverflow.com/questions/941832/is-it-safe-to-delete-a-void-pointer as long as your allocator uses internal boundary tags. Many do. However as mentioned above deleting a void pointer will..
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