Files
calc/help/arrow
Landon Curt Noll a31078bbec Remove all RCS @(#) lines and RCS strings
Some folks might think: “you still use RCS”?!?  And we will say,
hey, at least we switched from SCCS to RCS back in … I think it was
around 1994 ... at least we are keeping up! :-) :-) :-)

Logs say that SCCS version 18 became RCS version 19 on 1994 March 18.

RCS served us well.  But now it is time to move on.   And so we are
switching to git.

Calc releases produce a lot of file changes.  In the 125 releases
of calc since 1996, when I started managing calc releases, there
have been 15473 file mods!
2017-05-23 01:33:23 -07:00

74 lines
1.9 KiB
Plaintext

SYMBOL and NAME
-> - arrow operator
SYNOPSIS
p -> X
TYPES
p pointer to an lvalue
X identifier
return lvalue
DESCRIPTION
p->X returns the same as (*p).X. Thus the current value of *p is
to be an object of a type for which X identifies one element.
p->X then returns the lvalue corresponding to that element of the
value of *p.
The expression *p.X will cause a runtime error since this is
interpreted as *(p.X) in which p is expected to be an object of
an appropriate type.
Spaces or tabs on either side of -> are optional.
EXAMPLES
; obj pair {one, two}
; obj pair A, B
; p = &A
; p->one = 1; p->two = 2
; A
obj pair {1, 2}
; A->two = &B
; p->two->one = 3; p->two->two = 4
; *p->ptwo
obj pair {3, 4}
; B = {5,6}
; *p->two
obj pair {5, 6}
LIMITS
none
LINK LIBRARY
none
SEE ALSO
address, dereference, isptr, dot
## 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.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1997/09/06 20:03:34
## File existed as early as: 1997
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/