EmptyEnumerator
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]EmptyEnumerator class
Implements the IEnumerator interface for an empty generic collection.
template<typename T>class EmptyEnumerator : public System::Collections::Generic::IEnumerator<T>
Template parameters
| Parameter | Description |
|---|---|
| T | The type of the element in a collection. |
Methods
| Method | Description |
|---|---|
| IEnumerator * AsVirtualizedIterator() | Prepares the iterator to be used by the VirtualizedIterator class. |
| System::Details::VirtualizedIteratorBase<T> * CloneIterator() const override | |
| virtual MakeConstRef_t<T> Current() const | Gets current element. |
| virtual void Dispose() | Does nothing. |
| EmptyEnumerator() | |
| virtual bool Equals(ptr) | Compares objects using C# Object.Equals semantics. |
| static std::enable_if<IsSmartPtr<T1>::value&&IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares reference type objects in C# style. |
| static std::enable_if<!IsSmartPtr<T1>::value&&!IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares value type objects in C# style. |
| static bool Equals(float const&, float const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| static bool Equals(double const&, double const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| virtual bool FastCast(const Details::FastRttiBase&, void **) const | For internal purposes only. |
| MakeConstRef_t<T> get_Current() const override | Gets current element. |
| Detail::SmartPtrCounter * GetCounter() | Gets reference counter data structure associated with the object. |
| virtual int32_t GetHashCode() const | Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. |
| virtual const TypeInfo& GetType() const | Gets actual type of object. Analog of C# System.Object.GetType() call. |
| IEnumerator() | |
| void IncrementIterator() override | Moves the iterator step forward. |
| void InitializeIterator() override | Does the first MoveNext() call and prepares the enumerator object to be used by VirtualizedIterator. |
| virtual bool Is(const TypeInfo&) const | Check if object represents an instance of type described by targetType. Analog of C# ‘is’ operator. |
| void Lock() | Implements C# lock() statement locking. Call directly or use LockContext sentry object. |
| void MarkOwnedByVirtualizedIterator() | Marks the enumerator owned by virtualized iterator. |
| virtual ptr MemberwiseClone() const | Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. |
| bool MoveNext() override | Moves enumerator to the next element. If no element was referenced before, sets reference to the first element available. If container end was hit, does nothing. |
| Object() | Creates object. Initializes all internal data structures. |
| Object(Object const&) | Copy constructor. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| Object& operator=(Object const&) | Assignment operator. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| static bool ReferenceEquals(ptr const&, ptr const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, T const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, std::nullptr_t) | Reference-compares value type object with nullptr. |
| bool ReferenceEquals(String const&, std::nullptr_t) | Specialization of Object::ReferenceEquals for case of string and nullptr. |
| bool ReferenceEquals(String const&, String const&) | Specialization of Object::ReferenceEquals for case of strings. |
| int RemovedSharedRefs(int) | Decreases shared reference count by specified value. |
| void Reset() override | Resets enumerator to position before first element. |
| virtual void SetTemplateWeakPtr(uint32_t) | Set n’th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. |
| int SharedCount() const | Gets current value of shared reference counter. |
| Object * SharedRefAdded() | Increments shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| int SharedRefRemovedSafe() | Decrements and returns shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| virtual String ToString() const | Analog of C# Object.ToString() method. Enables converting custom objects to string. |
| static const TypeInfo& Type() | Implements C# typeof(System.Object) construct. |
| void Unlock() | Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. |
| Detail::SmartPtrCounter * WeakRefAdded() | Increments weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| void WeakRefRemoved() | Decrements weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| virtual ~IEnumerator() | |
| virtual ~Object() | Destroys object. Frees all internal data structures. |
See Also
- Class IEnumerator
- Namespace System::Linq::Details
- Library Aspose.Slides