TCache

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Cache class

Declaration

Source position: cachecls.pp line 63

`type TCache = class`
`public`
`constructor Create();`		Create a new cache class.
`destructor Destroy; override;`		Free the `TCache` class from memory
`function Add();`		Add a data element to the list.
`function AddNew();`		Add a new item to the list.
`function FindSlot();`		Find data pointer in the list
`function IndexOf();`		Return index of a data pointer in the list.
`procedure Remove();`		Remove a data item from the list.
`property Data []: Pointer; [rw]`		Indexed access to data items
`property MRUSlot: PCacheSlot; [rw]`		Most recent item slot.
`property LRUSlot: PCacheSlot; [r]`		Last used item
`property SlotCount: Integer; [rw]`		Number of slots in the list
`property Slots []: PCacheSlot; [r]`		Indexed array to the slots
`property OnIsDataEqual: TOnIsDataEqual; [rw]`		Event to compare 2 items.
`property OnFreeSlot: TOnFreeSlot; [rw]`		Event called when a slot is freed
`end;`

Inheritance

`TCache`		Cache class
\|
`TObject`

Description

TCache implements a cache class: it is a list-like class, but which uses a counting mechanism, and keeps a Most-Recent-Used list; this list represents the 'cache'. The list is internally kept as a doubly-linked list.

The Data property offers indexed access to the array of items. When accessing the array through this property, the MRUSlot property is updated.