count

Calc Software Package for Number Calc

NAME
    count - count elements of list or matrix satisfying a stated condition

SYNOPSIS
    count(x, y)

TYPES
    x		list or matrix
    y		string

    return	integer

DESCRIPTION
    For count(x, y), y is to be the name of a user-defined function;
    count(x,y) then returns the number of elements of x for which y
    tests as "true".

EXAMPLE
    ; define f(a) = (a < 5)
    ; A = list(1,2,7,6,4,8)
    ; count(A, "f")
	3

LIMITS
    none

LINK LIBRARY
    none

SEE ALSO
    select, modify

## 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: 29.3 $
## @(#) $Id: count,v 29.3 2006/05/07 07:25:46 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/count,v $
##
## 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/