Print Page - truncate from the end of list/string

Title: truncate from the end of list/string
Post by: Dmi on November 25, 2005, 12:41:06 AM

Can't find a simple way for truncating from the end of the list.

In general:

(set 's "abcdefg")

(2 s) => "cdefg"

(-2 s) => "fg"

But, if I want to truncate a number of symbols from the end:

(truncate-2-symbols s) => "abcde"

then I must count the string's length before.

The same situation is for the list's contents...

Is there a simple solution?

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Post by: newdep on November 25, 2005, 02:40:38 AM

do you mean this perhpas?

(reverse ( 2 (reverse "hello")))

>"hel"

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Post by: Dmi on November 25, 2005, 02:54:38 AM

Something like that :-)

Thanx.

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Post by: Lutz on November 25, 2005, 05:14:23 AM

and there is also 'chop' with the number of chars/elements to chop:

(chop "abcdefg" 2) => "abcde"

(chop '(a b c d e f g) 2) => (a b c d e)

Lutz

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Post by: Dmi on November 25, 2005, 01:09:36 PM

Thanks, Lutz!

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Forum => Anything else we might add? => Topic started by: Dmi on November 25, 2005, 12:41:06 AM