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c++ Programming Glossary: defineWhat is a smart pointer and when should I use one? http://stackoverflow.com/questions/106508/what-is-a-smart-pointer-and-when-should-i-use-one raises an exception.... A smart pointer by comparison defines a policy as to when the object is destroyed. You still have.. is automatically destroyed. ptr Oops Compile error ptr not defined since it is no longer in scope. Note that scoped_ptr instances.. destroyed To work around this problem both boost and C 11 define weak_ptr to define a weak uncounted reference to a shared_ptr..
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 two above extern double f int double However it must be defined exactly once. If you forget to define something that's been.. However it must be defined exactly once. If you forget to define something that's been declared and referenced somewhere then.. to and complains about a missing symbols. If you define something more than once then the linker doesn't know which..
What should main() return in C and C++? http://stackoverflow.com/questions/204476/what-should-main-return-in-c-and-c in C and C What is the correct most efficient way to define the main function in C and C int main or void main and why If..
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior unspecified and implementation defined behavior What is the.. unspecified and implementation defined behavior What is the difference between undefined unspecified.. defined behavior What is the difference between undefined unspecified and implementation defined behavior in C and C..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom within its implementation and we'd ultimately be trying to define the assignment operator in terms of itself Not only that but..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three this question Introduction C treats variables of user defined types with value semantics . This means that objects are implicitly.. operator nor the destructor ourselves these are implicitly defined for us. Quote from the standard The ... copy constructor and.. declare them. The implementation will implicitly define them if they are used. ... end note n3126.pdf section 12 §1..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points Behavior and Sequence Points What are Sequence Points What.. What are Sequence Points What is the relation between Undefined Behaviour and Sequence Points I often use funny and convoluted.. you've read this be sure to visit the follow up question Undefined Behavior and Sequence Points Reloaded . Note This is meant..
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 classes An aggregate class can have a user declared user defined copy assignment operator and or destructor An array is an aggregate.. class NotAggregate3 public NotAggregate3 int oops user defined constructor class Aggregate1 public NotAggregate1 member1 ok.. is called. If the default constructor is implicitly defined then all nonstatic members are recursively value initialized...
http://stackoverflow.com/questions/4421706/operator-overloading and while most of the stream output and input operators defined by the standard library are indeed defined as members of the.. input operators defined by the standard library are indeed defined as members of the stream classes when you implement output.. to create function objects also known as functors must be defined as a member function so it always has the implicit this argument..
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 Use references in function parameters and return types to define attractive interfaces. Use pointers to implement algorithms..
http://stackoverflow.com/questions/589575/size-of-int-long-etc bytes from that and the value of the CHAR_BIT macro that defines the number of bits in a byte in all but the most obscure platforms.. long 0 to 18446744073709551615 A C or C implementation can define the size of a type in bytes sizeof type to any value as long..
Why can't variables be declared in a switch statement? http://stackoverflow.com/questions/92396/why-cant-variables-be-declared-in-a-switch-statement problem here is one of scope. Your curly brackets define the scope as everything inside the 'switch' statement. This.. the initialization. The correct way to handle this is to define a scope specific to that case statement and define your variable.. is to define a scope specific to that case statement and define your variable within it. switch val case VAL This will work..
Seeking and reading large files in a Linux C++ application http://stackoverflow.com/questions/1035657/seeking-and-reading-large-files-in-a-linux-c-application On Linux systems you do not need special link flags. Define _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE. With these defines..
Start thread with member function http://stackoverflow.com/questions/10673585/start-thread-with-member-function is defined in terms of the INVOKE definition §20.8.2.1 Define INVOKE f t1 t2 ... tN as follows t1. f t2 ... tN when f is..
Difference between Enum and Define Statements http://stackoverflow.com/questions/136946/difference-between-enum-and-define-statements between Enum and Define Statements What's the difference between using a define statement.. as they are type safe and more easily discoverable. Defines are harder to locate and can have complex behavior for example..
How to make elements of vector unique? (remove non adjacent duplicates) http://stackoverflow.com/questions/1453333/how-to-make-elements-of-vector-unique-remove-non-adjacent-duplicates But again same order problem. Manual duplicate elimination Define a temporary vector TempVector. for each element in a vector..
How to use the PI constant in C++ http://stackoverflow.com/questions/1727881/how-to-use-the-pi-constant-in-c M_PI is your friend. Check for more. Taken from my math. h Define _USE_MATH_DEFINES before including math.h to expose these macro..
Instantiating classes by name with factory pattern http://stackoverflow.com/questions/1832003/instantiating-classes-by-name-with-factory-pattern typedef Type Creator bool define Key const key Creator v Define key v relationship return whether this is a new key. return..
Overload a C++ function according to the return value http://stackoverflow.com/questions/226144/overload-a-c-function-according-to-the-return-value Can you overload a function according to the return value Define a function that returns different things according to how the..
Should operator<< be implemented as a friend or as a member function? http://stackoverflow.com/questions/236801/should-operator-be-implemented-as-a-friend-or-as-a-member-function rhs.m_para bool operator Paragraph const rhs const Define operator in terms of the operator return this operator rhs ..
Dynamically allocating an array of objects http://stackoverflow.com/questions/255612/dynamically-allocating-an-array-of-objects std copy copy.mArray 0 copy.mArray c.mSize mArray Define assignment operator in terms of the copy constructor Modified..
Calling functions in a DLL from C++ http://stackoverflow.com/questions/539358/calling-functions-in-a-dll-from-c Here is an simple example on how this is done. Step 1 Define the function in the export.h file. int WINAPI IsolatedFunction.. IsolatedFunction const char title const char test Step 2 Define the function in the export.cpp file. #include windows.h int.. char test MessageBox 0 title test MB_OK return 1 Step 3 Define the function as an export in the export.def defintion file...
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration which accept return incomplete types void f1 X X f2 Define functions or methods which accept return pointers references.. Use it to declare a member class Foo X m compiler error Define functions or methods using this type void f1 X x compiler error..
Does C++ support compile-time counters? http://stackoverflow.com/questions/6166337/does-c-support-compile-time-counters for Stack Overflow code block. 1 1 1 1 1 1 Define a single new function with place value equal to the bit flipped..
Create WCF service for unmanaged C++ clients http://stackoverflow.com/questions/686452/create-wcf-service-for-unmanaged-c-clients and a default service configuration file app.config . Define the HelloService like this `` ServiceContract public interface..
http://stackoverflow.com/questions/6978643/cuda-and-classes c class cuda share improve this question Define the class in a header that you #include just like in C . Any..
http://stackoverflow.com/questions/726096/accessing-private-members alternatives might exist In response to comment question Define permissions institutional permission That sounds like not a..
Disallowing creation of the temporary objects http://stackoverflow.com/questions/914861/disallowing-creation-of-the-temporary-objects there will be another way to do all this by using lambdas. Define a function template class TLock class TLockedOperation void.. looks weird at first but followed by a code block means Define a function that takes no args and if I refer to anything by..
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