mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
77 lines
2.1 KiB
Plaintext
77 lines
2.1 KiB
Plaintext
NAME
|
|
tail - create a list of specified size from the tail of a list
|
|
|
|
SYNOPSIS
|
|
tail(x, y)
|
|
|
|
TYPES
|
|
x list
|
|
y int
|
|
|
|
return list
|
|
|
|
DESCRIPTION
|
|
If 0 <= y <= size(x) == n, tail(x,y) returns a list of size y whose
|
|
elements in succession have values x[[n - y]]. x[[1]], ..., x[[n - 1]].
|
|
|
|
If y > size(x), tail(x,y) is a copy of x.
|
|
|
|
If -size(x) < y < 0, tail(x,y) returns a list of size (size(x) + y)
|
|
whose elements in succession have values x[[-y]]. x[[-y + 1]], ...,
|
|
x[[size(x) - 1]], i.e. a copy of x from which the first -y members
|
|
have been deleted.
|
|
|
|
If y <= -size(x), tail(x,y) returns a list with no members.
|
|
|
|
For any integer y, x == join(head(x,-y), tail(x,y)).
|
|
|
|
EXAMPLE
|
|
> A = list(2, 3, 5, 7, 11)
|
|
> tail(A, 2)
|
|
|
|
list (2 members, 2 nonzero):
|
|
[[0]] = 7
|
|
[[1]] = 11
|
|
|
|
> tail(A, -2)
|
|
|
|
list (3 members, 3 nonzero):
|
|
[[0]] = 5
|
|
[[1]] = 7
|
|
[[2]] = 11
|
|
|
|
LIMITS
|
|
none
|
|
|
|
LINK LIBRARY
|
|
none
|
|
|
|
SEE ALSO
|
|
head, segment
|
|
|
|
## Copyright (C) 1999 Landon Curt Noll
|
|
##
|
|
## Calc is open software; you can redistribute it and/or modify it under
|
|
## the terms of the version 2.1 of the GNU Lesser General Public License
|
|
## as published by the Free Software Foundation.
|
|
##
|
|
## Calc is distributed in the hope that it will be useful, but WITHOUT
|
|
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
|
## Public License for more details.
|
|
##
|
|
## A copy of version 2.1 of the GNU Lesser General Public License is
|
|
## distributed with calc under the filename COPYING-LGPL. You should have
|
|
## received a copy with calc; if not, write to Free Software Foundation, Inc.
|
|
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
|
|
##
|
|
## @(#) $Revision: 29.2 $
|
|
## @(#) $Id: tail,v 29.2 2000/06/07 14:02:33 chongo Exp $
|
|
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/tail,v $
|
|
##
|
|
## Under source code control: 1995/07/10 02:09:30
|
|
## File existed as early as: 1995
|
|
##
|
|
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
|
|
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
|