Welcome to OR/2 Limited

Registered number: 2441253

Contact Details

Mailing address		Telephone numbers		Email us
OR/2 Limited 35, Kitto Road LONDON SE14 5TW England		UK: 020 7732 6550 International: +44 20 7732 6550 Fax number: +44 870 056 8826 (a fax to email gateway)

Current clients and activities - Roger Orr

Career computer contractor, mostly in C++/Java/C#.

Primary contract - Barclays Capital - Developer with Equity Derivatives IT until early 2013

Articles and presentations , mostly on computing.

NtTrace - Native API tracing for Windows

A few useful links

BSI C++ panel information cxxpanel.html
Test Drive Comeau C++ Online http://www.comeaucomputing.com/tryitout/
C++ Performance TR http://standards.iso.org/ittf/PubliclyAvailableStandards/c043351_ISO_IEC_TR_18015_2006(E).zip
Guide to C++ libraries C++ Org
What Every Computer Scientist Should Know About Floating Point Arithmetic http://www.validlab.com/goldberg/paper.pdf
Debugging rules http://www.debuggingrules.com/debuggingrules.jpg
Techie Q & A site http://stackoverflow.com/
Debugging tools from http://www.microsoft.com/whdc/DevTools/Debugging/default.mspx
The Little Book of Semaphores http://greenteapress.com/semaphores/
Book Butler http://www.bookbutler.com/
BCS code of conduct http://www.bcs.org/category/6030

These pages are designed and maintained by OR/2 Limited . If you have any queries or comments about these Web pages or other services, please contact us at

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