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Charles Williams

Charles Williams has asked 0 questions and find answers to 100 problems.

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About

Decision Models is a one-person (me) company that does consulting projects on Microsoft Excel, VBA and XLLs.
My main specialisations are the Excel calculation engine, performance and UDFs. My Website Decision Models and blog Excel and UDF Performance Stuff contain extensive information about Excel and UDF performance, Memory useage, VBA and C++ XLLs.
I also develop and market 2 commercial products, FastExcel for profiling Excel calculation performance and SpeedTools - a set of tools for speeding up Excel calculations.

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