[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

hash tables

It appears that it is not possible to use a string as a key in mzscheme's
hash tables.  Is this correct?  I've been able to use symbols and numbers
as keys but not strings or immutable strings; why is that?  Also, it would
be nice if an error was raised when an invalid key is used, as opposed to
finding out later that there is nothing stored at that key location.