A Circular buffer, or Circular for short, is a fixed-size buffer with one read and one write pointer. When data is read/written, the proper pointer is moved forward independently of the other one. When the end of the buffer is reached, the pointer wraps around to the beginning. Thus, old never-read values can be overwritten.

This datatype may be ideal for communications between entities where it does not really matter when old values get overwritten, but we still want a fixed-size buffer. For example, log messages are traditionally treated using this technique.

More information on circular buffers on Wikipedia

This class is creatable.

Properties

IsEmpty	property Read IsEmpty As Boolean
IsFull	property Read IsFull As Boolean
Overwrite	property Overwrite As Boolean
Reader	property Reader As Integer
Size	property Size As Integer
Writer	property Writer As Integer

Methods

Clear	Remove all the elements in the Circular by advancing the read pointer to the write pointer.
Peek	Function Peek ( ) As Variant
Read	Function Read ( ) As Variant
Reset	Sub Reset ( )
Resize	Sub Resize ( Size As Integer )
Write	Sub Write ( Value As Variant )