which is better, string concatentation or substitution?

[John Salerno]

Roy Smith wrote:
> In article <aMJ7g.2058$No6.45704 at news.tufts.edu>,
> John Salerno  <johnjsal at NOSPAMgmail.com> wrote:
>> Roy Smith wrote:
>>
>>> OK, here's a quick tutorial to "big-oh" notation. 
>> Wow, that was fantastic (and interesting)! Did you just write that? That 
>> should be saved somewhere! Mind if I post it on my website? (don't 
>> worry, no one goes there anyway) :)
> 
> Sure, feel free.  Once you post something on usenet, anybody can
> pretty much do anything they want with it.  I do prefer if people
> don't use what I write to line birdcages with, but have no control
> over that either :-)
> 
> 

Thanks! And don't worry about that last part, no birds here. :)