[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Class to store collections of bits (binary values that can be 0 or 1).
Source position: classesh.inc line 667
type TBits = class(TObject) 

public 

constructor Create(); virtual; 

Creates a new bits collection. 
destructor Destroy; override; 

Destroys a bit collection. 
function GetFSize; 

Returns the number of records used to store the bits. 
procedure SetOn(); 

Turn a particular bit on. 
procedure Clear(); 

Clears a particular bit. 
procedure Clearall; 

Clears all bits in the array. 
procedure CopyBits(); 

Copy bits from one bits set to another. 
procedure AndBits(); 

Performs an and operation on the bits. 
procedure OrBits(); 

Performs an or operation on the bits. 
procedure XorBits(); 

Performs a xor operation on the bits. 
procedure NotBits(); 

Performs a not operation on the bits. 
function Get(); 

Retrieve the value of a particular bit. 
procedure Grow(); 

Expands the bits array to the requested size. 
function Equals(); 

Determines whether the bits of 2 arrays are equal. 
procedure SetIndex(); 

Sets the start position for FindNextBit and FindPrevBit. 
function FindFirstBit(); 

Find first bit with a particular value. 
function FindNextBit; 

Searches the next bit with a particular value. 
function FindPrevBit; 

Searches the previous bit with a particular value. 
function OpenBit; 

Returns the position of the first bit that is set to False. 
property Bits []: Boolean; default; [rw] 

Access to all bits in the array. 

Current size of the array of bits. 

end; 

Class to store collections of bits (binary values that can be 0 or 1). 

  

Base class of all classes. 
TBits can be used to store collections of bits in an indexed array. This is especially useful for storing collections of booleans: Normally the size of a boolean is the size of the smallest enumerated type, i.e. 1 byte. Since a bit can take 2 values it can be used to store a boolean as well. Since TBits can store 8 bits in a byte, it takes 8 times less space to store an array of booleans in a TBits class then it would take to store them in a conventional array.
TBits introduces methods to store and retrieve bit values, apply masks, and search for bits.