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c++ Programming Glossary: unnecessaryWhy 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 be a good programming practice because it helps avoiding unnecessary inclusions thus reducing the overall compilation time. However..
Why is volatile not considered useful in multithreaded C or C++ programming? http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming provide the ones that volatile do so it is effectively unnecessary. For thread safe accesses to shared data we need a guarantee.. gives us everything we need by itself making volatile unnecessary. We can just remove the volatile qualifier entirely. share..
http://stackoverflow.com/questions/2712076/how-to-use-an-iterator this typedef struct point float x float y point is a C ism unnecessary in C . Just spell it struct point float x float y That would..
Regular cast vs. static_cast vs. dynamic_cast http://stackoverflow.com/questions/28002/regular-cast-vs-static-cast-vs-dynamic-cast to an object of a specific type and thus a check would be unnecessary. Example void func void data conversion from MyClass void is..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom swap will use our custom swap operator skipping over the unnecessary construction and destruction of our class that std swap would.. swap along side a free function swap etc. But this is all unnecessary any proper use of swap will be through an unqualified call and..
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 can also cast through inheritance hierarchies. It is unnecessary when casting upwards towards a base class but when casting downwards..
http://stackoverflow.com/questions/4303513/push-back-vs-emplace-back complicated cases where a push_back is likely to make unnecessary copies or move . For example with the traditional insert function..
Efficient way of reading a file into an std::vector<char>? http://stackoverflow.com/questions/4761529/efficient-way-of-reading-a-file-into-an-stdvectorchar reading a file into an std vector char I'd like to avoid unnecessary copies. I'm aiming for something along the lines of std ifstream..
C++11 rvalues and move semantics confusion http://stackoverflow.com/questions/4986673/c11-rvalues-and-move-semantics-confusion roughly equivalent to your first. The std move on tmp is unnecessary and can actually be a performance pessimization as it will inhibit..
What does T&& (double ampersand) mean in C++11? http://stackoverflow.com/questions/5481539/what-does-t-double-ampersand-mean-in-c11 this constructor was passed a temporary the copy would be unnecessary because we know the temporary will just be destroyed why not.. into the object being constructed thereby eliminating the unnecessary copy. The move constructor would be used for temporaries and..
C/C++: Detecting superfluous #includes? http://stackoverflow.com/questions/614794/c-c-detecting-superfluous-includes Leaving them there only prolong the compile time and adds unnecessary compilation dependencies. Trying to figure out which are still..
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 do not actually do that because it is slow and unnecessary. Instead implementations let you make mistakes and get away..
Why should `new` be used as little as possible? http://stackoverflow.com/questions/6500313/why-should-new-be-used-as-little-as-possible allocated memory block. Why dynamic allocation is often unnecessary. In C there's a neat construct called a destructor . This mechanism..
casting unused return values to void http://stackoverflow.com/questions/689677/casting-unused-return-values-to-void Personally I'll turn these warnings off since it's unnecessary noise. I'll eat my words if a bug escapes because of it... ..
How should I detect unnecessary #include files in a large C++ project? http://stackoverflow.com/questions/74326/how-should-i-detect-unnecessary-include-files-in-a-large-c-project should I detect unnecessary #include files in a large C project I am working on a large.. in Visual Studio 2008 and there are a lot of files with unnecessary #include's. Sometimes the #include's are just artifacts and..
Why should I prefer to use member initialization list? http://stackoverflow.com/questions/926752/why-should-i-prefer-to-use-member-initialization-list For class members which are classes then it avoids an unnecessary call to a default constructor. Consider class A public A x 0..
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