API:System.Contnrs.TBucketList
Delphi
TBucketList = class(TCustomBucketList)
C++
class PASCALIMPLEMENTATION TBucketList : public TCustomBucketList
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | System.Contnrs.pas System.Contnrs.hpp |
System.Contnrs | System.Contnrs |
Description
TCustomBucketList is the base class for lists that store items under a limited number of categories.
System.Contnrs.TBucketList inherits from System.Contnrs.TCustomBucketList. All content below this line refers to System.Contnrs.TCustomBucketList.
TCustomBucketList is the base class for lists that store items under a limited number of categories.
Use TCustomBucketList as a base class for lists of items that fit into a limited number of categories (or buckets). Each bucket can contain multiple items, and there is a well-defined function (the protected BucketFor method) that determines the bucket into which an item belongs. TCustomBucketList descendants can include lists of items that fall into natural categories, or implementations of a hash table.
Do not create instances of TCustomBucketList. In TCustomBucketList, the BucketFor method is abstract (pure virtual), meaning that descendant classes must override it and provide an implementation.