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From: SourceForge.net <no...@so...> - 2003-09-01 17:27:56
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Bugs item #798637, was opened at 2003-09-01 16:01 Message generated for change (Comment added) made by npstrick You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=439479&aid=798637&group_id=44411 Category: None Group: None Status: Open Resolution: None Priority: 8 Submitted By: Ken Monks (monks) Assigned to: Nobody/Anonymous (nobody) Summary: Another error in Class/IndexFunction Initial Comment: The following error message: "Error, (in Class/IndexFunction) Type error in assignment: field InertFunction in class InertExpr should have type Inert" That occurs quite frequently when trying quizzes, though I can't reproduce the exact conditions to make it repeatable. If I change the 3 lines labeled "WAS:" in Class/IndexFunction in Class.mpl back to what they were the error seems to go away. I don't really understand the Class/IndexFunction proc or why those changes were made in the first place so I don't want to just change it back since someone obviously changed them for a reason. Is this related to Gustav's Class/IndexFunction error [796266 sporadic prompt field error]? ---------------------------------------------------------------------- >Comment By: Neil Strickland (npstrick) Date: 2003-09-01 17:27 Message: Logged In: YES user_id=430681 It was me that made these changes, in response to bug number 796262 ("c> type error"). Previously, if x was an object created by the OOP framework, then an assignment like x['Foo'] := bar; would fully evaluate bar. In particular, questionversion['MapleType'] := vector; would set questionversion['MapleType'] to the vector() procedure, whereas you really need it to be set to the unevaluated name 'vector'. Anyway, the probable explanation of Ken's bug is that there is an assignment x['InertFunction'] := bar, where bar evaluates to something of type Inert, but bar itself does not have type inert. This assignment should be changed to x['InertFunction'] := eval(bar); I hope that will fix the problem. I will let Ken look at this, as I have not understood the Inert stuff yet. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=439479&aid=798637&group_id=44411 |
