function which builds, from a list, a list without the eleme

Pytty55 · Post by **Pytty55** » Sat Aug 18, 2018 1:14 am

I'm trying to write a function which builds, from a list, a list without the elements
that begin with a given letter, and by using char and string; example:

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(remove 'n '(nose naked retired art friend)) ==> (art friend retired)

What I did so far :

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(defun my-remove (r list)
(cond
((not list) nil)
((equal (char (string (car list))0)#R)(my-remove r(cdr list)))
(t (cons (car list) (my-remove r(cdr list)))) ) )

But keeps returning :

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(remove 'n '(nose naked retired art friend)) ==> (NOSE NAKED ART FRIEND)

What did I miss ?

Post by **nuntius** » Sat Aug 18, 2018 3:55 am

Things to look at / fix:

called REMOVE instead of MY-REMOVE
hard-coded #\R instead of using the passed parameter
pass a character to remove instead of a quoted symbol (#\r vs 'r)
run (string 'nose) and look at the capitalization of the result

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function which builds, from a list, a list without the eleme

function which builds, from a list, a list without the eleme

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