IGrouping
Contents
[
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]IGrouping class
template<typename TKey,typename TItem>class IGrouping : public virtual System::Collections::Generic::IEnumerable<TItem>
Methods
| Method | Description |
|---|---|
| iterator begin() | Gets iterator pointing to the first element (if any) of the collection. This iterator can’t be used to change a referenced object because GetEnumerator() returns a copy-object of T. |
| const_iterator begin() const | Gets iterator pointing to the first element (if any) of the const-qualified instance of the collection. |
| const_iterator cbegin() const | Gets iterator pointing to the first const-qualified element (if any) of the collection. |
| const_iterator cend() const | Gets iterator pointing right after the last const-qualified element (if any) of the collection. |
| iterator end() | Gets iterator pointing right after the last element (if any) of the collection. This iterator can’t be used to change a referenced object because GetEnumerator() returns a copy-object of T. |
| const_iterator end() const | Gets iterator pointing right after the last element (if any) of the const-qualified instance of the collection. |
| 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. |
| virtual TKey get_Key() | |
| Detail::SmartPtrCounter * GetCounter() | Gets reference counter data structure associated with the object. |
| virtual SharedPtr<IEnumerator<T>> GetEnumerator() | Gets enumerator. |
| 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. |
| virtual bool Is(const TypeInfo&) const | Check if object represents an instance of type described by targetType. Analog of C# ‘is’ operator. |
| T LINQ_Aggregate(const Func<T, T, T>&) | Applies an accumulator function over a sequence. |
| bool LINQ_All(std::function<bool(T)>) | Determines whether all elements of a sequence satisfy a condition. |
| bool LINQ_Any() | Determines whether a sequence contains any elements. |
| bool LINQ_Any(std::function<bool(T)>) | Determines whether any element of a sequence exists or satisfies a condition. |
| SharedPtr<IEnumerable<ResultType>> LINQ_Cast() | Casts the elements to the specified type. |
| SharedPtr<IEnumerable<Result>> LINQ_Cast() | |
| SharedPtr<IEnumerable<T>> LINQ_Concat(SharedPtr<IEnumerable<T>>) | Concatenates two sequences. |
| bool LINQ_Contains(T) | Determines if a sequence contains a specified value. |
| int LINQ_Count() | Returns the number of elements in the sequence (calculated via direct counting). |
| int LINQ_Count(const Func<T, bool>&) | Returns the number of elements in the sequence that satisfy the specified condition. |
| T LINQ_ElementAt(int) | Returns the element at a specified index in a sequence. |
| T LINQ_ElementAtOrDefault(int) | Returns the element at a specified index in a sequence. |
| T LINQ_First() | Returns the first element of a sequence. |
| T LINQ_First(const Func<T, bool>&) | Returns the first element of a sequence that satisfy the specified condition. |
| T LINQ_FirstOrDefault() | Returns the first element of a sequence, or a default value if the sequence is empty. |
| T LINQ_FirstOrDefault(std::function<bool(T)>) | Returns the first element of the sequence that satisfies a condition or a default value if no such element is found. |
| System::SharedPtr<IEnumerable<System::SharedPtr<System::Linq::IGrouping<Key, T>>>> LINQ_GroupBy(System::Func<T, Key>) | Groups the elements of a sequence. |
| SharedPtr<IEnumerable<SharedPtr<System::Linq::IGrouping<Key, Source>>>> LINQ_GroupBy(System::Func<Source, Key>) | |
| T LINQ_Last() | Returns the last element of a sequence. |
| T LINQ_LastOrDefault() | Returns the last element of a sequence, or a default value if the sequence is empty. |
| ResultType LINQ_Max(const Func<T, ResultType>&) | Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. |
| ResultType LINQ_Max(const Func<Source, ResultType>&) | |
| ResultType LINQ_Min(const Func<T, ResultType>&) | Invokes a transform function on each element of a generic sequence and returns the minimum resulting value. |
| ResultType LINQ_Min(const Func<Source, ResultType>&) | |
| SharedPtr<IEnumerable<ResultType>> LINQ_OfType() | Filters the elements of the sequence based on the specified type. |
| SharedPtr<IEnumerable<Result>> LINQ_OfType() | |
| SharedPtr<Linq::IOrderedEnumerable<T>> LINQ_OrderBy(const Func<T, Key>&) | Sorts the elements of a sequence in ascending order according to the key values selected by keySelector. |
| SharedPtr<Linq::IOrderedEnumerable<Source>> LINQ_OrderBy(const Func<Source, Key>&) | |
| SharedPtr<Linq::IOrderedEnumerable<T>> LINQ_OrderByDescending(const Func<T, Key>&) | Sorts the elements of a sequence in descending order according to the key values selected by keySelector. |
| SharedPtr<Linq::IOrderedEnumerable<Source>> LINQ_OrderByDescending(const Func<Source, Key>&) | |
| SharedPtr<IEnumerable<T>> LINQ_Reverse() | Inverts the order of the elements in a sequence. |
| SharedPtr<IEnumerable<ResultType>> LINQ_Select(const Func<T, ResultType>&) | Transforms elements of a sequence. |
| SharedPtr<IEnumerable<ResultType>> LINQ_Select(const Func<T, int32_t, ResultType>&) | Transforms each element of a sequence into a new form by incorporating the element’s index. |
| SharedPtr<IEnumerable<Result>> LINQ_Select(const Func<Source, Result>&) | |
| SharedPtr<IEnumerable<Result>> LINQ_Select(const Func<Source, int32_t, Result>&) | |
| SharedPtr<IEnumerable<ResultType>> LINQ_SelectMany(const Func<T, SharedPtr<IEnumerable<ResultType>>>&) | Projects each element of a sequence and combines the resulting sequences into one sequence. |
| SharedPtr<IEnumerable<Result>> LINQ_SelectMany(const Func<Source, SharedPtr<IEnumerable<Result>>>&) | |
| SharedPtr<IEnumerable<T>> LINQ_Take(int32_t) | Returns a specified number of contiguous elements from the start of a sequence. |
| System::ArrayPtr<T> LINQ_ToArray() | Creates an array from a sequence. |
| SharedPtr<List<T>> LINQ_ToList() | Creates a List |
| SharedPtr<IEnumerable<T>> LINQ_Where(std::function<bool(T)>) | Filters a sequence based on the specified predicate. |
| void Lock() | Implements C# lock() statement locking. Call directly or use LockContext sentry object. |
| virtual ptr MemberwiseClone() const | Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. |
| 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. |
| 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. |
| virtual virtualized_iterator * virtualizeBeginConstIterator() const | Gets the implementation of begin const iterator for the current container. |
| virtual virtualized_iterator * virtualizeBeginIterator() | Gets the implementation of begin iterator for the current container. |
| virtual virtualized_iterator * virtualizeEndConstIterator() const | Gets the implementation of end const iterator for the current container. |
| virtual virtualized_iterator * virtualizeEndIterator() | Gets the implementation of end iterator for the current container. |
| 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 ~Object() | Destroys object. Frees all internal data structures. |
See Also
- Class IEnumerable
- Namespace System::Linq
- Library Aspose.Slides