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/
