troubleshooting Question

querying a list of classes

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cycledudeFlag for United Kingdom of Great Britain and Northern Ireland asked on
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I have an application that is working, but an operation which is querying a database many times, is performing slowly.. so I need to alter the code to work from memory rather than the database.

I am loading the required data into a list of classes, for sake f example the class contains data for employees.

What I need to do is pull a set of data from the list, as if I was querying a database... for example, I would like to extract a new list which contains all employees with the surname 'Jones'

How can I do this?
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