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Navigation: Code Documentation > RSCommon > InterfaceCollections > Classes

TIStringHashTable Class

Warning
Deprecated since Delphi XE4. Please use the RSInterfaceCollections\|TIStringHashTable class instead.

The TIStringHashTable class implements and manages a hash table of string-interface associations. It stores interfaces (IUnknown and its descendants) indexed by a string key.

Hash tables provide constant time O(C) search access to any value in the table (using the key) as the table grows (unlike a TList where to search for an item is O(n) (or O(log n) for sorted TStrings). The TIStringHashTable object provides properties and methods to:

• Add or delete the interfaces in the table.

• Locate and access interfaces in the table.

Namespace: InterfaceCollections

	Name	Description
	CachedEntry	Represents property CachedEntry. (Inherited from GHashTable.TGCustomHashtable.)
	CachedHashIndex	Represents property CachedHashIndex. (Inherited from GHashTable.TGCustomHashtable.)
	CachedIndex	Represents property CachedIndex. (Inherited from GHashTable.TGCustomHashtable.)
	Capacity	Represents property Capacity.
	Collisions	Represents property Collisions. (Inherited from GHashTable.TGStringHashtable.)
	Count	Represents property Count. (Inherited from GHashTable.TGStringHashtable.)
	Empty	Represents property Empty. (Inherited from GHashTable.TGStringHashtable.)
	Enumerator	Represents property Enumerator. (Inherited from GHashTable.TGCustomHashtable.)
	EOT	Returns whether you are at the end of the table. This property is used with the Reset and NextElement methods to iterate through the entire table of items (Inherited from GHashTable.TGCustomHashtable.)
	HashType	Represents property HashType.
	ItemByIndex[Integer]	Represents property ItemByIndex[Integer].
	Item[String]	Represents property Item[String].
	KeyByIndex[Integer]	Represents property KeyByIndex[Integer]. (Inherited from GHashTable.TGStringHashtable.)
	LoadFactor	Represents property LoadFactor.
	OnChange	Represents property OnChange.
	Owner	Represents property Owner. (Inherited from GHashTable.TGCustomHashtable.)
	Table	Represents property Table. (Inherited from GHashTable.TGCustomHashtable.)
	Threshold	Represents property Threshold. (Inherited from GHashTable.TGStringHashtable.)
	Updating	Represents property Updating. (Inherited from GHashTable.TGCustomHashtable.)

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	Name	Description
	Assign(TPersistent)	Copies the Source hashtable to the current table (Overrides GHashTable.TGStringHashtable.Assign(TPersistent).)
	AssignTo(TPersistent)	Represents method AssignTo(TPersistent). (Inherited from GHashTable.TGStringHashtable.)
	BeginUpdate	Enables the hash table to track when the table is changing (Inherited from GHashTable.TGCustomHashtable.)
	Change	Represents method Change. (Inherited from GHashTable.TGCustomHashtable.)
	Clear	Clear the table instance of all elements (Inherited from GHashTable.TGCustomHashtable.)
	ClearCache	Represents method ClearCache. (Inherited from GHashTable.TGCustomHashtable.)
	ContainsItem(TRSPointerType)	Returns a boolean value indicating whether the Value is contained within the table (Inherited from GHashTable.TGCustomHashtable.)
	ContainsKey(String)	Overloaded. Represents method ContainsKey(String). (Inherited from GHashTable.TGStringHashtable.)
	ContainsKey(String,IInterface)	Overloaded. Represents method ContainsKey(String,IInterface).
	ContainsKey(String,TRSPointerType)	Overloaded. Represents method ContainsKey(String,TRSPointerType). (Inherited from GHashTable.TGStringHashtable.)
	DivisionHash(Integer,Integer)	Represents method DivisionHash(Integer,Integer). (Inherited from GHashTable.TGCustomHashtable.)
	Elements	Represents method Elements.
	EndUpdate	Enables the hash table to track when the table has finished changing (Inherited from GHashTable.TGCustomHashtable.)
	FindEntry(TRSPointerType)	Represents method FindEntry(TRSPointerType). (Inherited from GHashTable.TGCustomHashtable.)
	FoldingHash(Integer,Integer)	Represents method FoldingHash(Integer,Integer). (Inherited from GHashTable.TGCustomHashtable.)
	Get(String)	Represents method Get(String).
	GetEnumerator	Represents method GetEnumerator.
	GetKeyByIndex(Integer)	Represents method GetKeyByIndex(Integer). (Inherited from GHashTable.TGStringHashtable.)
	GetValue(TRSPointerType)	Overloaded. Represents method GetValue(TRSPointerType).
	GoToEntry(Integer)	Represents method GoToEntry(Integer). (Inherited from GHashTable.TGCustomHashtable.)
	HashCode(TRSPointerType,Integer)	Represents method HashCode(TRSPointerType,Integer). (Overrides GHashTable.TGCustomHashtable.HashCode(TRSPointerType,Integer).)
	HasKey(TRSPointerType)	Overloaded. Represents method HasKey(TRSPointerType). (Inherited from GHashTable.TGCustomHashtable.)
	HasKey(TRSPointerType,TGHashtableEntry)	Overloaded. Represents method HasKey(TRSPointerType,TGHashtableEntry). (Inherited from GHashTable.TGCustomHashtable.)
	Indices	Represents method Indices. (Inherited from GHashTable.TGStringHashtable.)
	MidSquareHash(Integer,Integer)	Represents method MidSquareHash(Integer,Integer). (Inherited from GHashTable.TGCustomHashtable.)
	NewHashtableEntry	Represents method NewHashtableEntry. (Overrides GHashTable.TGStringHashtable.NewHashtableEntry.)
	Next	Represents method Next. (Inherited from GHashTable.TGStringHashtable.)
	NextElement	Returns next element in the iterator (Inherited from GHashTable.TGCustomHashtable.)
	Put(String,IInterface)	Represents method Put(String,IInterface).
	PutValue(TRSPointerType,IInterface)	Overloaded. Represents method PutValue(TRSPointerType,IInterface).
	Rehash	Represents method Rehash. (Inherited from GHashTable.TGCustomHashtable.)
	Remove(String)	Represents method Remove(String).
	RemoveValue(TRSPointerType)	Overloaded. Represents method RemoveValue(TRSPointerType).
	Reset	Resets the enumeration used by the NextElement method and EOT property to iterate through all the items in the table, i.e., it puts you back at the beginning of the table (Inherited from GHashTable.TGCustomHashtable.)
	SetCollisions(Integer)	Represents method SetCollisions(Integer). (Inherited from GHashTable.TGCustomHashtable.)
	SetCount(Integer)	Represents method SetCount(Integer). (Inherited from GHashTable.TGCustomHashtable.)
	ToArray	Represents method ToArray. (Inherited from GHashTable.TGStringHashtable.)
	ToIntfArray	Represents method ToIntfArray.
	TruncationHash(Integer,Integer)	Represents method TruncationHash(Integer,Integer). (Inherited from GHashTable.TGCustomHashtable.)

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