TDD and code performance/efficiency

[Michael Feathers]

"Steve Jorgensen" <nospam@nospam.nospam> wrote in message
news:29kchvk38t2gbq68jr0oc5c7kkjenpfbsm@4ax.com... The code I'm starting to write using TDD is very nice in many ways. It's
short, easy to read/modify, and does everything it's supposed to do. I can see, however, that is is woefully inefficient.

Maybe this paper will help? I found that sometimes the code that I've TDDed
ends up being more efficient than I expect it to, mostly because I delay
computation until it really needs to be done and sometimes it doesn't have
to be done at all:

http://www.objectmentor.com/resources/articles/MichaelFeathers--EmergentOpti
mizationInTestDrivenDesign.pdf


Michael Feathers
www.objectmentor.com

[Info]

On Thu, 17 Jul 2003 11:39:50 -0400, "Michael Feathers"
<mfeathers@objectmentorNOSPAM.com> wrote:
"Steve Jorgensen" <nospam@nospam.nospam> wrote in messagenews:29kchvk38t2gbq68jr0oc5c7kkjenpfbsm@4ax.com... The code I'm starting to write using TDD is very nice in many ways. It'sshort, easy to read/modify, and does everything it's supposed to do. I can see, however, that is is woefully inefficient.Maybe this paper will help? I found that sometimes the code that I've TDDedends up being more efficient than I expect it to, mostly because I delaycomputation until it really needs to be done and sometimes it doesn't haveto be done at all:http://www.objectmentor.com/resources/articles/MichaelFeathers--EmergentOptimizationInTestDrivenDesign.pdfMichael Featherswww.objectmentor.com

I'll check that out as soon as I figure out why my I can't open pdfs any more.

The inefficiency I'm talking about in this particular project is the frequency
of creating temorary String objects. Certainly, there may be other ways in
which my code has high potential efficiency.