Delphi Basics .Net : System.Collections.BitArray

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System.Collections.BitArray Class

Description

A BitArray efficiently holds a single dimension array of Bit (1 and 0) values.

Array elements may be freely added, updated or removed - unlike the less flexible native Array and .Net System.Array types.

A BitArray may be constructed in a number of ways, the simplest requiring a simple count of elements. The final constructor takes a set of 32 bit values from a single dimensional array of Int32 values. The bits are taken from right (least significant) to left (most significant) sequence from each Int32 value.

In BitArray, true equates with 1 and false equates with 0.

Syntax

Constructor Create (	Count : Integer ; );
Constructor Create (	Count : Integer; Value : Boolean );
Constructor Create (	Values : BitArray ; );
Constructor Create (	Values : Array of Boolean ; );
Constructor Create (	Values : Array of Byte ; );
Constructor Create (	Values : Array of Int32; );

Methods

	And	Perform a logical And of one BitArray against another
	Clone	Make a new BitArray that is a clone of the current BitArray
	CopyTo	Copies elements from the BitArray to a single dimension array
	Get	Gets the BitArray element value at a specific index position
	GetEnumerator	Gets an enumerator to allow reading the elements of the current BitArray
	Not	Creates a copy of the current BitArray with all values inverted
	Or	Perform a logical Or of one BitArray against another
	Set	Sets a BitArray element value on (true) or off (false)
	SetAll	Sets all BitArray element values either on (true) or off (false)
	Xor	Perform a logical Exclusive Or of one BitArray against another

Properties

Count	Integer	Gets the number of elements contained in the BitArray.
IsReadOnly	Boolean	Gets a value indicating whether the BitArray is read-only. Always false!
IsSynchronized	Boolean	Gets a value indicating whether access to the BitArray is synchronized (thread-safe).
Item	Boolean	Gets or sets the value of the bit at a specific position in the BitArray. This is the default operator, so can be specified using [] brackets.
Length	Integer	Gets or sets the number of elements in the BitArray.

Microsoft MSDN links

System.Collections
System.Collections.bitarray