MQL5 ReferenceStandard LibraryGeneric Data CollectionsCHashMap<TKey,TValue>

CHashMap<TKey, TValue>

CHashMap<TKey, TValue> is a generic class that implements the IMap<TKey, TValue> interface.

Description

The CHashMap<TKey, TValue> class is an implementation of the dynamic hash table, the data of which are stored in the form of unordered key/value pairs taking into account the key uniqueness requirement. This class provides basic methods to work with a hash table, such as to access a value by key, to search and delete a key/value pair, and others.

Declaration

template<typename TKey, typename TValue>
class CHashMap : public IMap<TKey, TValue>

Header

#include <Generic\HashMap.mqh>

Inheritance Hierarchy

ICollection

IMap

CHashMap

Class Methods

Method	Description
Add	Adds a key/value pair to the hash table
Count	Returns the number of elements in the hash table
Comparer	Returns a pointer to the IEqualityComparer<T> interface, used to organize a hash table
Contains	Determines whether the hash table contains the specified key/value pair
ContainsKey	Determines whether the hash table contains the key/value pair with the specified key
ContainsValue	CHashMap<TKey, TValue> is a generic class that implements the IMap<TKey, TValue> interface
CopyTo	Copies all key/value pairs from the hash table to the specified arrays, starting at the specified index
Clear	Removes all elements from the hash table
Remove	Removes the first occurrence of the key/value pair from the hash table
TryGetValue	Gets an element with the specified key from the hash table
TrySetValue	Changes the value of a key/value pair from the hash table at the specified key

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