YAAO (yet another assignment op

[Mark Wittenberg]

> One I can't remember being mentioned so far :-
> 
> 	->=
> 
> Then you can use  
> 
> 	p ->= next;
> 
> for chasing down lists!

I always thought it would be sort of nice to have
	<=>
as "swap": thus
	a <=> b;
replaces
	some_type c;
	c = a;
	a = b;
	b = a;
useful since "some_type" can't be decided dynamically.
Also on some machines and for some "some_type" this
can be done efficiently, even atomically, eg,
	register char	*a, *b;

	a <=> b;
on a 68000 is one instruction.

Mark Wittenberg
Relational Technology, Inc.
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