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Class to manage collections of pointers.
Source position: classesh.inc line 259
type TList = class(TObject) |
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protected |
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function Get(); |
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procedure Grow; virtual; |
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procedure Put(); |
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procedure Notify(); virtual; |
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procedure SetCapacity(); |
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function GetCapacity; |
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procedure SetCount(); |
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function GetCount; |
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function GetList; |
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public |
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constructor Create; |
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Class to manage collections of pointers. |
destructor Destroy; override; |
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Destroys the list and releases the memory used to store the list elements. |
procedure AddList(); |
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Add all pointers from another list |
function Add(); |
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Adds a new pointer to the list. |
procedure Clear; virtual; |
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Clears the pointer list. |
procedure Delete(); |
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Removes a pointer from the list. |
public |
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class procedure Error(); virtual; |
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Raises an EListError exception. |
public |
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procedure Exchange(); |
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Exchanges two pointers in the list. |
function Expand; |
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Increases the capacity of the list if needed. |
function Extract(); |
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Remove the first occurrence of a pointer from the list. |
function First; |
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Returns the first non-nil pointer in the list. |
function GetEnumerator; |
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Create an IEnumerator instance |
function IndexOf(); |
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Returns the index of a given pointer. |
procedure Insert(); |
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Inserts a new pointer in the list at a given position. |
function Last; |
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Returns the last non-nil pointer in the list. |
procedure Move(); |
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Moves a pointer from one position in the list to another. |
procedure Assign(); |
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Copy the contents of other lists. |
function Remove(); |
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Removes a value from the list. |
procedure Pack; |
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Removes Nil pointers from the list and frees unused memory. |
procedure Sort(); |
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Sorts the pointers in the list. |
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Current capacity (i.e. number of pointers that can be stored) of the list. |
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Current number of pointers in the list. |
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property Items: Pointer; default; [rw] |
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Provides access to the pointers in the list. |
property List: PPointerList; [r] |
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Memory array where pointers are stored. |
end; |
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Class to manage collections of pointers. |
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Base class of all classes. |
TList is a class that can be used to manage collections of pointers. It introduces methods and properties to store the pointers, search in the list of pointers, sort them. It manages its memory by itself, no intervention for that is needed. It has an event notification mechanism which allows to notify of list changes. This slows down some of TList mechanisms, and if no notification is used, TFPList may be used instead.
To manage collections of strings, it is better to use a TStrings descendent such as TStringList. To manage general objects, a TCollection class exists, from which a descendent can be made to manage collections of various kinds.
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Class to manage arrays or collections of strings |
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Base class to manage collections of named objects. |
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