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I am having two problems while working in Lisp and I can't find any tutorials or sites that explain this. How do you split up a string into its individual characters? And how would I be able to change those characters into their corresponding ASCII values? If anyone knows any sites or tutorial videos explaining these, they would be greatly appreciated.
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To turn that string into a list of words, use the split() method. You don't need to specify a separator or a maxsplit paramter, as we want to separate all the words wherever there is whitespace between them.
CL-USER 87 > (coerce "abc" 'list)
(#\a #\b #\c)
CL-USER 88 > (map 'list #'char-code "abc")
(97 98 99)
Get the Common Lisp Quick Reference.
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A Lisp string is already split into its characters, in a way. It is a vector of characters, and depending upon what you need to do, you can use either whole string operations on it, or any operations applicable to vectors (like all the operations of the sequence protocol) to handle the individual characters.
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