Topic: Taking the spaces out of a list.

[crowellsr]

I have a list of numbers that I want tot take the spaces out of and make it into a string.

Example list :(83 84 69 86 69) wanted result: 8384698669

I think there is a function that does this but I can't remember so I am counting on you experts to refresh my memory. The list is stored in a variable not user inputted.

Steve

[Jeff_M]

Code: [Select]

(setq testlist '(83 84 69 86 69))
(apply 'strcat (mapcar 'itoa testlist))


[MP]

Good one Jeff.

If the list is never nested but may contain multiple data types substituting vl-princ-to-string
for itoa might be a touch more flexible. If the list is nested then one has to determine how the
nesting should be represented ... parenthesis retained etc (or not), but probably miles from the
intent of the original poster, so not going there.

[crowellsr]

Thanks for the quick response guys.

It is working perfectly now.

Steve