[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'contnrs' (#fcl)


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Hash list class for pointer data


Source position: contnrs.pp line 212

type TFPHashList = class(TObject)


  constructor Create;


Create a new instance of the hashlist

  destructor Destroy; override;


Removes an instance of the hashlist from the heap

  function Add();


Add a new key/data pair to the list

  procedure Clear;


Clear the list

  function NameOfIndex();


Returns the key name of an item by index

  function HashOfIndex();


Return the hash valye of an item by index

  function GetNextCollision();


Get next collision number

  procedure Delete();


Delete an item from the list.

  class procedure Error();


Raise an error

  function Expand;


Expand the list

  function Extract();


Extract a pointer from the list

  function IndexOf();


Return the index of the data pointer

  function Find();


Find data associated with key

  function FindIndexOf();


Return index of named item.

  function FindWithHash();


Find first element with given name and hash value

  function Rename();


Rename a key

  function Remove();


Remove first instance of a pointer

  procedure Pack;


Remove nil pointers from the list

  procedure ShowStatistics;


Return some statistics for the list.

  procedure ForEachCall();


Call a procedure for each element in the list

  property Capacity: Integer; [rw]


Capacity of the list.

  property Count: Integer; [rw]


Current number of elements in the list.

  property Items []: Pointer; default; [rw]


Indexed array with pointers

  property List: PHashItemList; [r]


Low-level hash list

  property Strs: PChar; [r]


Low-level memory area with strings.





Hash list class for pointer data




TFPHashList implements a fast hash class. The class is built for speed, therefore the key values can be shortstrings only, and the data can only be non-nil pointers.

if a base class for an own hash class is wanted, the TFPCustomHashTable class can be used. If a hash class for objects is needed instead of pointers, the TFPHashObjectList class can be used.

See also



Hash class




Hash table for data pointers



Hash table for string data.

Documentation generated on: Sep 28 2017