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More examples of uses of the stack

Put four things on the stack, two integers and two words.

    3, "cat", 99, "blue";
The assignment arrow can be used to remove the top of the stack and store it as the value of x.

    -> x;
Now print out what is left on the stack.

    ** 3 cat 99
I.e. only three things left. What was the fourth is now the value of x:

    x =>
    ** blue
(The non-destructive assignment arrow "->>" described later, assigns the top of the stack without removing it.)

Aaron Sloman
Fri Jan 2 03:17:44 GMT 1998