note BrowserUk <blockquote><i></i></blockquote> <p>As an aside, thousands of objects do not normally come into being instantaneously or en masse; but rather come into being over time. <p>As your filters are static for any given run of the program, why not pass them through the filters at instantiation time and set a flag? (And perhaps re-run it any time one of the filtered attributes changes.) <p>Then when you need the filtered subset, you only need a single boolean test for each object. <div class="pmsig"><div class="pmsig-171588"> <hr /> <font size=1 > <div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div> <div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div> <div>"Science is about questioning the status quo. Questioning authority". </div> <div>In the absence of evidence, opinion is indistinguishable from prejudice. </div> </font> </div></div> 1011650 1011650