mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
65 lines
2.0 KiB
Plaintext
65 lines
2.0 KiB
Plaintext
NAME
|
|
substr - extract a substring of given string
|
|
|
|
SYNOPSIS
|
|
substr(str, pos, len)
|
|
|
|
TYPES
|
|
str string
|
|
pos nonnegative integer
|
|
len nonnegative integer
|
|
|
|
return string
|
|
|
|
DESCRIPTION
|
|
If pos > length of str or len is zero, the null string "" is returned.
|
|
|
|
If 1 <= pos <= strlen(str), substr(str, pos, len) returns the
|
|
string of length min(strlen(str) - pos + 1, len) formed by
|
|
consecutive characters of str starting at position pos, i.e. the
|
|
string has length len if this is possible, otherwise it ends with
|
|
the last character of str. (The first character has pos = 1, the
|
|
second pos = 2, etc.)
|
|
|
|
If pos = 0, the result is the same as for pos = 1.
|
|
|
|
EXAMPLE
|
|
> A = "abcde";
|
|
> print substr(A,0,2), substr(A,1,2), substr(A,4,1), substr(A,3,5)
|
|
ab ab d cde
|
|
|
|
LIMITS
|
|
none
|
|
|
|
LINK LIBRARY
|
|
none
|
|
|
|
SEE ALSO
|
|
XXX - fill in
|
|
|
|
## 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: 29.1 $
|
|
## @(#) $Id: substr,v 29.1 1999/12/14 09:16:09 chongo Exp $
|
|
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/substr,v $
|
|
##
|
|
## Under source code control: 1995/10/05 04:52:27
|
|
## File existed as early as: 1995
|
|
##
|
|
## chongo <was here> /\oo/\ http://reality.sgi.com/chongo/
|
|
## Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
|