We could also use one of the later techniques I eventually settled on: have readers return a one-item list to mean "got a datum, here it is!" or an empty list to mean "didn't get a datum". It complicates all actions, admittedly - now you have to unwrap the return value - but avoids special marker cons cells.
Sincerely, AmkG ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122412 _______________________________________________ Readable-discuss mailing list Readable-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/readable-discuss
