这几天准备完善下 Base64 & UUE 编码文件生成工具，发现处理大文件时，特别慢，分析了一下发现是字符串拼接和切分代码效率太低，看如下代码： Private Sub Command1_Click()Dim fL As Long, enfp As Integer, defp As Integer, enfn, defnDim B() As Byte, tmpstr As String, outStr As Str 继续阅读