newlispfanclub.alh.net

Posted: **Sun Apr 21, 2019 12:41 am**

I have a table like this:

(setq lst '(("header1" "header2" "header3") ( "11" "12" "13") ("21" "22" "23") ("31" "32" "33") ("41" "42" "43" )))

I want to get some continueous lines e.g. from the first line to the third line by this:

(filter (and (>= $idx 1) (<= $idx 3)) lst)  ;; '(( "11" "12" "13") ("21" "22" "23") ("31" "32" "33") ) wanted.

But I find the function "filter" does not support "$idx".
So, is there a better way to achieve this?

Posted: **Sun Apr 21, 2019 12:08 pm**

> (slice lst 1 3)
(("11" "12" "13") ("21" "22" "23") ("31" "32" "33"))
>

> (1 3 lst)
(("11" "12" "13") ("21" "22" "23") ("31" "32" "33"))

Get a frame of lines from a table by filter