用VB处理字符串的拼接和删除部分内容等字符串操作非常缓慢。

这个对象专门用于解决字符串处理慢的问题。

' ======================================================================================
' Name:     vbAccelerator cStringBuilder
' Author:   Steve McMahon (steve@vbaccelerator.com)
' Date:     1 January 2002
'
' Copyright ?2002 Steve McMahon for vbAccelerator
' --------------------------------------------------------------------------------------
' Visit vbAccelerator - advanced free source code for VB programmers
' http://vbaccelerator.com
' --------------------------------------------------------------------------------------
'
' VB can be slow to append strings together because of the continual
' reallocation of string size.  This class pre-allocates a string in
' blocks and hence removes the performance restriction.
'
' Quicker insert and remove is also possible since string space does
' not have to be reallocated.
'
' Example:
' Adding "http://vbaccelerator.com/" 10,000 times to a string:
' Standard VB:   34s
' This Class:    0.35s
'
' ======================================================================================