Strings, Unsafe code, is C# really any use to a VB programmer?
Joe "Nuke Me Xemu" Foster
> Thanks for the feedback. And sorry for the delay, you still there" <g>.
Top /this/ delay! (Guess I'd better mail this too...)
> Before I raised the original question I had built a QuickString class in VB
> for building blocks of HTML with easy to use syntax. Primarily the
> performance bottleneck I ran into seems to be the performance of Mid$.
> Regardless of whether you've allocated space in your string for your current
> operations, Mid$ doesn't trust you and checks anyway.
Oh, stop whingeing about Mid$ and simply paste this into a module
to live fast, die young, and leave a beautiful crash...
' Macho, macho Mid$! I've got to be, a macho Mid$!
Property Let MachoMid(ByRef String1 As String, ByVal Start As Long, ByVal Length As Long, ByRef String2 As String)
RtlMoveMemory ByVal StrPtr(String1) + 2 * Start - 2, ByVal StrPtr(String2), Length * 2
End Property
' I have absolutely no idea whatsoever if this actually is faster than Mid$
Property Get MachoMid$(ByRef String1 As String, ByVal Start As Long, ByVal Length As Long)
MachoMid = Space$(Length) ' Try the BSTR API to get a raw string buffer?
RtlMoveMemory ByVal StrPtr(MachoMid), ByVal StrPtr(String1) + 2 * Start - 2, Length * 2
End Property
(Moo hoo hah ha...!)
--
Joe Foster <mailto:jlfoster%40znet.com> Wanna buy a Bridge? <http://xenu.net/>
WARNING: I cannot be held responsible for the above They're coming to
because my cats have apparently learned to type. take me away, ha ha!