Hi Thorsten, > it's been some time .. ;-)
Welcome back! :) > I'm playing around a bit with hex<->ascii conversion in PicoLisp, and I > have the problem that (char 0) = NIL > > (hex "00") > -> 0 > : (char (hex "00")) > -> NIL This is correct. 'char' converts a number to a (transient) symbol here. A symbol's name is a string, a null-terminated sequence of UTF-8 characters. In case of 'char', this string has a single character and a terminating null byte. This is the same as in other languages like C. So the number 65 gives a symbol "A": : (char 65) -> "A" But what happens with 0? It gives an empty string, i.e. a null-byte : (char 0) -> NIL and an empty string in PicoLisp is NIL. : "" -> NIL ☺/ A!ex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
