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copied!<p>There's Scheme In A Grid (<a href="http://siag.nu/siag/" rel="nofollow noreferrer">http://siag.nu/siag/</a>), but it's looking kind of out of date.</p> <p>There's also Haxcel (<a href="http://www.mrtc.mdh.se/projects/Haxcel/" rel="nofollow noreferrer">http://www.mrtc.mdh.se/projects/Haxcel/</a>), which was a thesis project.</p> <p>If you want to do functional programming in a spreadsheet the best practical choice is probably Resolver One, as you've already noted. (I would say "functional programming" in this context means first-class functions that work with other spreadsheet functions and the sheet itself - i.e. you could write a function that returns a function, call it and have the result go in a cell for yet other cells to call, etc. I don't know if OpenOffice and Google Docs will do that.)</p> <p>A colleague and I have been working on a little project to do this within Excel, using a syntax very close to Excel formulas. I described it briefly in a comment on Roy MacLeans's VBA Blog:</p> <p><a href="http://roymacleanvba.wordpress.com/2009/08/04/domain-specific-languages-%e2%80%93-part-2/#comment-130" rel="nofollow noreferrer">http://roymacleanvba.wordpress.com/2009/08/04/domain-specific-languages-%e2%80%93-part-2/#comment-130</a></p> <p>It's changed some since I posted that, but if you want to call our very-minimal syntax a "language", it's certainly "pure". (And I'm still planning to release it to the vast universe of FP-implemented-in-VBA enthusiasts, but stuff keeps coming up...)</p>

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