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c++ Programming Glossary: constructorsIs there a difference in C++ between copy initialization and direct initialization? http://stackoverflow.com/questions/1051379/is-there-a-difference-in-c-between-copy-initialization-and-direct-initializati an overloaded function The functions in this case are the constructors of T including explicit ones and the argument is x . Overload.. implicit conversions While direct initialization has all constructors available to call and in addition can do any implicit conversion.. of those forms without using the obvious through explicit constructors. struct B struct A operator B struct B B B A const std cout..
C++ superclass constructor calling rules http://stackoverflow.com/questions/120876/c-superclass-constructor-calling-rules constructor share improve this question Base class constructors are automatically called for you if they have no argument. If..
What does the explicit keyword in C++ mean? http://stackoverflow.com/questions/121162/what-does-the-explicit-keyword-in-c-mean this means is that the compiler can use single parameter constructors to convert from one type to another in order to get the right..
What are copy elision and return value optimization? http://stackoverflow.com/questions/12953127/what-are-copy-elision-and-return-value-optimization called. You shouldn't have critical logic inside copy move constructors or destructors as you can't rely on them being called. share..
http://stackoverflow.com/questions/146452/what-are-pod-types-in-c for Plain Old Data that is a struct or class without constructors destructors and virtual members functions. Wikipedias article..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c to create small arrays without wasting space or calling constructors for not used elements but they will introduce rather large changes..
Is it okay to inherit implementation from STL containers, rather than delegate? http://stackoverflow.com/questions/2034916/is-it-okay-to-inherit-implementation-from-stl-containers-rather-than-delegate traits value_type iterator etc... Domain specific constructors more useful to the user than std vector ones... Add a few domain..
c++ call constructor from constructor http://stackoverflow.com/questions/308276/c-call-constructor-from-constructor constructor As an c# developer I'm used to run through constructors class Test public Test DoSomething public Test int count this.. two ways of simulating this 1 You can combine two or more constructors via default parameters class Foo public Foo char x int y 0 combines.. class Foo public Foo char x int y 0 combines two constructors char and char int ... 2 Use an init method to share common code..
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 is an array or a class clause 9 with no user declared constructors 12.1 no private or protected non static data members clause.. imply This does not mean an aggregate class cannot have constructors in fact it can have a default constructor and or a copy constructor.. as many private and protected member functions but not constructors as well as as many private or protected static data members..
smart pointers (boost) explained http://stackoverflow.com/questions/569775/smart-pointers-boost-explained for transfer of ownership by introducing so called move constructors and move assignment operators . It also comes with such a transfer.. cannot copy it but you can move it by using C 1x's move constructors unique_ptr type p new type unique_ptr type q p not legal unique_ptr..
http://stackoverflow.com/questions/5854581/polymorphism-in-c of this in the conclusion. Coercion casts implicit constructors These mechanisms allow user defined classes to specify behaviours.. from the Standard conversions in the topic above. Implicit constructors effectively do the same thing but are controlled by the cast.. types Standard conversions casting coercion implicit constructors they all contribute subtle support for polymorphism. From the..
Calling virtual functions inside constructors http://stackoverflow.com/questions/962132/calling-virtual-functions-inside-constructors virtual functions inside constructors Suppose I have two C classes class A public A fn virtual void..
C++: When (and how) are C++ Global Static Constructors Called? http://stackoverflow.com/questions/1271248/c-when-and-how-are-c-global-static-constructors-called When and how are C Global Static Constructors Called I'm working on some C code and I've run into a question..
C++ Constructor/Destructor inheritance http://stackoverflow.com/questions/14184341/c-constructor-destructor-inheritance at least one constructor and has exactly one destructor. Constructors B does not inherit constructors from A Unless B's ctor explicitely.. B which is a subclass of A also have Foo in its interface. Constructors aren't a part of objects' interface. They belong directly to..
How to make generic computations over heterogeneous argument packs of a variadic template function? http://stackoverflow.com/questions/14261183/how-to-make-generic-computations-over-heterogeneous-argument-packs-of-a-variadic F f index_list Is... const i Ts ... args Constructors of invoker's sub objects will invoke the functor. Note that..
Constructors with default parameters in Header files http://stackoverflow.com/questions/1440222/constructors-with-default-parameters-in-header-files with default parameters in Header files I have a cpp file like..
C++ - Arguments for Exceptions over Return Codes http://stackoverflow.com/questions/1849490/c-arguments-for-exceptions-over-return-codes codes for exceptional cases only for the following reasons Constructors can't give a return code Decouples the failure path which should..
Developing C wrapper API for Object-Oriented C++ code http://stackoverflow.com/questions/2045774/developing-c-wrapper-api-for-object-oriented-c-code was Every object is passed about in C an opaque handle. Constructors and destructors are wrapped in pure functions Member functions..
std::initializer_list as function argument http://stackoverflow.com/questions/2357452/stdinitializer-list-as-function-argument in the context of having a grammatical initializer list . Constructors are enumerated as of 13.3.1.7 ... If T has an initializer list..
May volatile be in user defined types to help writing thread-safe code http://stackoverflow.com/questions/2491495/may-volatile-be-in-user-defined-types-to-help-writing-thread-safe-code the article template typename T class LockingPtr public Constructors destructors LockingPtr volatile T obj Mutex mtx pObj_ const_cast..
Initializing a union with a non-trivial constructor http://stackoverflow.com/questions/321351/initializing-a-union-with-a-non-trivial-constructor U A a B b U memset this 0 sizeof U For Q1 From C 03 12.1 Constructors pg 190 The implicitly defined default constructor performs the.. type no initialization is performed. For Q2 From C 03 12.1 Constructors pg 190 A constructor is trivial if it is an implicitly declared..
http://stackoverflow.com/questions/347358/inheriting-constructors gcc constructor share improve this question Constructors are not inherited. They are called implicitly or explicitly..
How useful would Inheriting Constructors be in C++? http://stackoverflow.com/questions/4129023/how-useful-would-inheriting-constructors-be-in-c useful would Inheriting Constructors be in C As I sit in the C Standards committee meetings they.. are discussing the pros and cons of dropping Inheriting Constructors since no compiler vendor has implemented it yet the sense being..
C++ Move semantics and Exceptions http://stackoverflow.com/questions/4732084/c-move-semantics-and-exceptions that had too many pitfalls. Proposal N3050 Allowing Move Constructors to Throw Rev 1 has been incorporated into the draft standard...
How to implement the factory pattern in C++ correctly http://stackoverflow.com/questions/5120768/how-to-implement-the-factory-pattern-in-c-correctly reason to use the factory pattern is usually polymorphism. Constructors can't be virtual and even if they could it wouldn't make much..
The copy constructor and assignment operator http://stackoverflow.com/questions/5368258/the-copy-constructor-and-assignment-operator if it has internal dynamic memory. Useful link Copy Constructors Assignment Operators and More Copy constructor and operator..
Are destructors called after a throw in C++? http://stackoverflow.com/questions/8311457/are-destructors-called-after-a-throw-in-c the order in which the destructors are invoked C 11 15.2 Constructors and destructors except.ctor 1 As control passes from a throw..
Optimization due to constructor initializer list http://stackoverflow.com/questions/8386848/optimization-due-to-constructor-initializer-list due to constructor initializer list Constructors should initialize all its member objects through initializer..
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