JESS: (lowcase )

[Ludwig Pfefferkorn]

Hi, Can anybody help me with the followig problem?   I use a function to read the answer of the user:       (deffunction frage-stellen (?text ?erlaubte-werte)     (printout t ?text)     (bind ?antwort(read))     (if (lexemep ?antwort) then (bind ?antwort (lowcase ?antwort)))     (while (not (member$ ?antwort ?erlaubte-werte))         (printout t ?text)         (bind ?antwort(read))         (if (lexemep ?antwort) then (bind ?antwort (lowcase ?antwort))))     ?antwort)   My problem is that (lowcase ?antwort) returns a string and not a symbol though ?antwort is a symbol, so member$ doesn't work. I couldn't find a function for making explicit type-conversion, so I don't know how I can solve this problem. Thank you for any help.