[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Objects' (#rtl)

TCollection

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

Manage a collection of pointers of objects

Declaration

Source position: objects.pp line 404

type TCollection = object(TObject)

  Items: PItemList;

  

Pointer to list of items.

  Count: Sw_Integer;

  

Current count of items

  Limit: Sw_Integer;

  

Max number of items

  Delta: Sw_Integer;

  

Number of pointers to allocate when adding items.

  constructor Init();

  

Instantiate a new collection.

  constructor Load();

  

Initialize a new collection and load collection from a stream.

  destructor Done; virtual;

  

Clean up collection, release all memory.

  function At();

  

Return the item at a certain index.

  function IndexOf(); virtual;

  

Find the position of a certain item.

  function GetItem(); virtual;

  

Read one item off the stream.

  function LastThat();

  

Return last item which matches a test.

  function FirstThat();

  

Return first item which matches a test.

  procedure Pack;

  

Remove all >Nil pointers from the collection.

  procedure FreeAll;

  

Release all objects from the collection.

  procedure DeleteAll;

  

Delete all elements from the collection. Objects are not destroyed.

  procedure Free();

  

Free item from collection, calling it's destructor.

  procedure Insert(); virtual;

  

Insert a new item in the collection at the end.

  procedure Delete();

  

Delete an item from the collection, but does not destroy it.

  procedure AtFree();

  

Free an item at the indicates position, calling it's destructor.

  procedure FreeItem(); virtual;

  

Destroy a non-nil item.

  procedure AtDelete();

  

Delete item at certain position.

  procedure ForEach();

  

Execute procedure for each item in the list.

  procedure SetLimit(); virtual;

  

Set maximum number of elements in the collection.

  procedure Error(); virtual;

  

Set error code.

  procedure AtPut();

  

Set collection item, overwriting an existing value.

  procedure AtInsert();

  

Insert an element at a certain position in the collection.

  procedure Store();

  

Write collection to a stream.

  procedure PutItem(); virtual;

  

Put one item on the stream

end;

Inheritance

TCollection

  

Manage a collection of pointers of objects

TObject

  

Basis of all objects

Description

The TCollection object manages a collection of pointers or objects. It also provides a series of methods to manipulate these pointers or objects.

Whether or not objects are used depends on the kind of calls you use. All kinds come in 2 flavors, one for objects, one for pointers.


Documentation generated on: Jun 22 2020