9 Mar
2016
9 Mar
'16
1:43 a.m.
Andru Luvisi scripsit:
How were they spelled in Lisp 1.5? The manual lists
add1 and sub1, but says
nothing about them modifying the value of a variable.
They may not have been in the very earliest 1.5, but rather in one of the
many 1.5 and 1.6 offshoots (which are documented mostly, if at all,
in unsearchable PDFs), probably spelled inc and dec. The add1 and sub1
functions (later spelled 1+ and 1-) have always been pure functional.
--
John Cowan http://www.ccil.org/~cowan cowan(a)ccil.org
One Word to write them all / One Access to find them,
One Excel to count them all / And thus to Windows bind them.
--Mike Champion