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c++ Programming Glossary: anWhat can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux can I use to profile C code in Linux I have a C application I'm.. C application I'm in the process of optimizing. What tool can I use to pinpoint my slow code c unix profiling share improve.. one of the suggested ones. However if you're in a hurry and you can manually interrupt your program under the debugger..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three is The Rule of Three What does copying an object mean What are the copy constructor and the copy assignment.. is The Rule of Three What does copying an object mean What are the copy constructor and the copy assignment operator.. does copying an object mean What are the copy constructor and the copy assignment operator When do I need to declare them..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points Behavior and Sequence Points What are Sequence Points What is the relation.. Points What is the relation between Undefined Behaviour and Sequence Points I often use funny and convoluted expressions.. Undefined Behaviour and Sequence Points I often use funny and convoluted expressions like a i i to make myself feel better...
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration A definition can be used in the place of a declaration. An identifier can be declared as often as you want. Thus the following..
Regular cast vs. static_cast vs. dynamic_cast http://stackoverflow.com/questions/28002/regular-cast-vs-static-cast-vs-dynamic-cast if you downcast and the argument type is not polymorphic. An example if JumpStm j dynamic_cast JumpStm stm ... else if ExprStm.. int main Derived d Base b d dynamic_cast Derived b invalid An up cast is always valid with both static_cast and dynamic_cast..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom share improve this question Overview Why do we need it Any class that manages a resource a wrapper like a smart pointer.. and destruction of our class that std swap would entail. An in depth explanation The goal Let's consider a concrete case... copy other.mArray other.mArray mSize mArray 3 return this And we say we're finished this now manages an array without leaks...
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three a Bjarne Stroustrup 60 person b a What happens here b a And here If you are puzzled by the name name age age part this.. takes care of self assignment without an explicit check. An even more robust solution to this problem is the copy and swap..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points meta that started all this would be the place to do that. Answers to that question are monitored in the C chatroom where.. reading them again won't make you crazy. Pre requisites An elementary knowledge of C Standard What are Sequence Points.. of operator. So far so good. Moving on to sequence points. An alternation definition of seq points given by the comp.lang.c..
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 Formal definition from the C standard C 03 8.5.1 §1 An aggregate is an array or a class clause 9 with no user declared.. you like and not violate the rules for aggregate classes An aggregate class can have a user declared user defined copy assignment.. user defined copy assignment operator and or destructor An array is an aggregate even it is an array of non aggregate class..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c meta that started all this would be the place to do that. Answers to that question are monitored in the C chatroom where.. share improve this question Arrays on the type level An array type is denoted as T n where T is the element type and.. as part of the array itself or anywhere else in memory . An array is not a pointer. static_assert std is_same int 8 int..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c My alltime favorite C FQA lite References vs. Pointers An Introduction to References References and const c pointers..
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 compiler that inUnion is a template id. But where exactly And should it then assume that inUnion is a class template i.e... template id 14.2 that denotes an entity or label 6.6.4 6.1 An identifier is just a plain sequence of characters digits while.. names are an exception that are handled separately. An identifier function name is dependent not by itself but by the..
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 foo int a 5 return a int main int p foo cout p p 8 cout p And the code is just running with no runtime exceptions The output.. temporary stores because they are really cheap and easy. An implementation of C is not required to use a stack for storage.. It doesn't because that would make the program slower. An implementation of C is not required to leave the garbage you..
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