| Path : /usr/share/calc/help/ |
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NAME
select - form a list by selecting element-values from a given list
SYNOPSIS
select(x, y)
TYPES
x list
y string
return list
DESCRIPTION
If y is to be the name of a user-defined function, select(x, y)
returns a list whose members are the values z of elements of x
for which the function at z tests as nonzero.
The list x is not changed. The order of the returned list is
the same as in x.
EXAMPLE
; define f(x) = x > 5
; A = list(2,4,6,8,2,7)
; print select(A, "f")
list (3 elements, 3 nonzero):
[[0]] = 6
[[1]] = 8
[[2]] = 7
LIMITS
none
LINK LIBRARY
none
SEE ALSO
append, delete, insert, islist, pop, push, remove, rsearch, search,
size
## Copyright (C) 1999-2006 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.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1995/07/10 02:09:31
## 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/