MQL5 Reference / Standard Library / Generic Data Collections / CHashMap<TKey,TValue/ Previous  Next

ContainsKey

Determines whether the hash table contains the key/value pair with the specified key.

bool ContainsKey(
   TKey  key     // key
   );

Parameters

key

[in]  Key.

Return Value

Returns true if the hash table contains a key/value pair with the specified key, or false otherwise.