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c++ Programming Glossary: thereforeHow do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work chunk into the free list it can touch this admin data and therefore stumple over an overwritten pointer. This will crash the system...
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol the #endif directive of course . The preprocessor will therefore replace the #include a.h directive in b.h with the empty string..
How come a non-const reference cannot bind to a temporary object? http://stackoverflow.com/questions/1565600/how-come-a-non-const-reference-cannot-bind-to-a-temporary-object decided it doesn't make sense to modify temporaries therefore they disallowed binding to non const references. May be some..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code problem is memory access. Hardware design efforts in CPUs therefore currently focus heavily on optimizing caches prefetching pipelines..
When does invoking a member function on a null instance result in undefined behavior? http://stackoverflow.com/questions/2474018/when-does-invoking-a-member-function-on-a-null-instance-result-in-undefined-beha is an lvalue. A null pointer does not refer to an object therefore when we use the lvalue we have undefined behavior. The problem..
Simple example of threading in C++ http://stackoverflow.com/questions/266168/simple-example-of-threading-in-c main thread wait for the new thread to finish execution therefore blocks its own execution. t1.join More information about std..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom the function if construction of the copy fails and it's therefore not possible to alter the state of this . What we did manually..
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 reinterpret_cast reinterpret_cast then const_cast It can therefore be used as a replacement for other casts in some instances but..
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 pre 2010 allows template friend specifiers as an extension therefore one can simulate this solution each class has its own unique..
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 user needs to do some extra work to initialize the members therefore brace initialization would be incorrect. If virtual functions..
http://stackoverflow.com/questions/4421706/operator-overloading are always copied. Your own function objects should therefore be cheap to copy. If a function object absolutely needs to use.. 2 Also note that the postfix variant does more work and is therefore less efficient to use than the prefix variant. This is a good..
Why can templates only be implemented in the header file? http://stackoverflow.com/questions/495021/why-can-templates-only-be-implemented-in-the-header-file were not in the header they wouldn't be accessible and therefore the compiler wouldn't be able to instantiate the template. A..
What C++ Smart Pointer Implementations are available? http://stackoverflow.com/questions/5026197/what-c-smart-pointer-implementations-are-available reference to an object owned by a std shared_ptr and will therefore not prevent the deletion of the object if the std shared_ptr..
How to convert a number to string and vice versa in C++ http://stackoverflow.com/questions/5290089/how-to-convert-a-number-to-string-and-vice-versa-in-c itoa or itof functions because they are non standard and therefore not portable. Use string streams #include sstream include this.. take a C style string as an argument const char and therefore their usage may be considered a not exactly good C practice...
Easiest way to convert int to string in C++ http://stackoverflow.com/questions/5590381/easiest-way-to-convert-int-to-string-in-c in term of std string . std string s std to_string 42 is therefore the shortest way I can think of. Note see string.conversions..
smart pointers (boost) explained http://stackoverflow.com/questions/569775/smart-pointers-boost-explained support neither the second nor the third. They can therefore not be returned from functions or passed somewhere else. Which..
http://stackoverflow.com/questions/5854581/polymorphism-in-c code . a itself runs code specifically for double and is therefore not polymorphic. But in the second call to a the compiler knows..
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 and iostreams often have separate implementations and therefore separate buffers this could lead to a problem if both were used..
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 state that structure alignment is implementation defined. Therefore each compiler may choose to align data differently resulting..
What is the difference between NULL, '\0' and 0 http://stackoverflow.com/questions/1296843/what-is-the-difference-between-null-0-and-0 to something wacky. Anyone doing this deserves to be shot. Therefore here are some valid ways to check for a null pointer if pointer..
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol during previous preprocessing macro A_H has been defined. Therefore the compiler will skip the following text this time until the.. realize that this is actually a desirable behavior . Therefore even though include guards help you preventing recursive mutual..
How do I start a new CUDA project in Visual Studio 2008? http://stackoverflow.com/questions/2046228/how-do-i-start-a-new-cuda-project-in-visual-studio-2008 the rules file with the Toolkit as opposed to the SDK. Therefore I've split this answer into two halves use the correct instructions.. is simply adding compilation settings for the CUDA code. Therefore you need to do this step manually. Remember to do it for all..
Is there a max array length limit in C++? http://stackoverflow.com/questions/216259/is-there-a-max-array-length-limit-in-c array of type vector char minus a small constant value . Therefore a vector char may contain more items than a vector int before..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line its conceptual location is just after the 30 line . Therefore you carry on to the next iteration. x is still 30 from previous..
Adding C++ Object to Objective-C Class http://stackoverflow.com/questions/2262011/adding-c-object-to-objective-c-class single interface class between the Objective C and C code. Therefore I would like to have a persistent C object in the ViewController..
How does C compute sin() and other math functions? http://stackoverflow.com/questions/2284860/how-does-c-compute-sin-and-other-math-functions the implementation of sin is totally system dependent. Therefore you can find the implementation for each platform somewhere..
Determine if two rectangles overlap each other? http://stackoverflow.com/questions/306316/determine-if-two-rectangles-overlap-each-other for Non Overlap is Cond1 Or Cond2 Or Cond3 Or Cond4 Therefore a sufficient condition for Overlap is the opposite De Morgan..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c and we might want to avoid the cost of copying it. Therefore we might come up with idea of returning by reference or by pointer...
http://stackoverflow.com/questions/4421706/operator-overloading to have shortcut semantics and their code may depend on it Therefore it is highly advised NEVER to define them. Arithmetic Operators..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration or methods. This is why it's called an incomplete type . Therefore you cannot use the type to declare a member or a base class..
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 std abort outOfMemHandler would be called repeatedly . Therefore the handler should either ensure that the next allocation succeeds..
Why does integer overflow on x86 with GCC cause an infinite loop? http://stackoverflow.com/questions/7682477/why-does-integer-overflow-on-x86-with-gcc-cause-an-infinite-loop using x86 integer instructions which wrap on overflow. Therefore I would have expected it to wrap on overflow despite the fact..
How do I pass a unique_ptr argument to a constructor or a function? http://stackoverflow.com/questions/8114276/how-do-i-pass-a-unique-ptr-argument-to-a-constructor-or-a-function code. You cannot tell just from the function signature. Therefore my recommendation is this If you mean for a function to claim..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops the allocator will request fresh pages from the OS. Therefore there is a high chance that large allocations will appear at..
Boolean expression (grammar) parser in c++ http://stackoverflow.com/questions/8706356/boolean-expression-grammar-parser-in-c precedence rules as mentioned by others is quite tedious. Therefore the grammar lacks a certain elegance. Abstract Data Type I defined..
Is there any overhead to declaring a variable within a loop? (C++) http://stackoverflow.com/questions/982963/is-there-any-overhead-to-declaring-a-variable-within-a-loop-c happens inside the loop just assigning 4 to var . Therefore these two snippets have the same overhead. share improve this..
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