* "Olivier Pinçon" <opin...@wanadoo.fr> | How can I transform single characters (like 'A, 'B, 'C) in strings which | contain 1 character (respectively "A", "B", "C") ? | | Please tell it me !! It should'nt be complicated !!
'A, 'B, and 'C aren't characters, they are (quoted) symbols.
if you want a mapping from string to symbol, it's INTERN (creates it) or FIND-SYMBOL (looks it up, only). if you want a mapping from symbol to string, it's SYMBOL-NAME.
#\A, #\B, and #\C are characters. if you have a string of length one or a symbol whose symbol-name is a string of length one, CHARACTER will return the corresponding character.
(character 'a) => #\A
if you want to create a string out of a character, STRING will do that:
(string #\a) => "a"
which textbook or reference manual are you using?
[I have assumed Common Lisp in the absence of any contrary information.]
#:Erik -- suppose we blasted all politicians into space. would the SETI project find even one of them?
> How can I transform single characters (like 'A, 'B, 'C) in strings which > contain 1 character (respectively "A", "B", "C") ?
Just to be pedantic, the objects 'A, 'B, 'C, etc. are not CHARACTERs, but rather SYMBOLs. Common Lisp has a separate CHARACTER type which would be written as #\A, #\B, #\C, etc.
> Please tell it me !! It should'nt be complicated !!
As another poster revealed, calling SYMBOL-NAME on a symbol will return the name of that symbol as a string. This, of course, works on symbols with arbitrary length names.
A more interesting question is why do you want to do this? Often questions like yours mask other, more interesting and fundamental questions about how to accomplish a particular task.
-- Thomas A. Russ, USC/Information Sciences Institute t...@isi.edu
