Miranda has a lot of similarities to Haskell. I can't say for sure that I can help you, but post your question and we'll see.

Even if I can't, there are a lot of knowledgeable Haskell folks here...

You are getting lost on syntactic sugar.
(define (foo x y z) (+ (- x y) z))
is sugar for:
(define foo (lambda (x y z) (+ (- x y) z)))

Likewise, inside the body of a lambda, using
(define (bar...

A begin is implied in the body of a lambda.

The problem is that you have to be extra careful to keep data and code separate in scheme. You are mixing the two.

For example, the following is not...

The same problem?

I see nothing wrong with your code... (I can't test it myself ATM, as I'm just recovering from a system wipe and have yet to reinstall scheme.)

Do you think it might be...

That shouldn't work at all. Both upgraph and downgraph are defined to take a single argument, but you are passing multiple...

That could be the problem. Make sure also that you aren't calling...

Thanks. Please keep in mind that the OP (and most other readers here) haven't read (nor will they) the R5RS.

The R5RS committee needed a word for a technical thing. They chose poorly (though,...

Just as a random addendum. Above I said you could make your ADT as:
(define (rank card) (car card))
That's fine, but if you really want to wow, forget the fluff and just say:
(define rank car)
...

Of course. You'll need to read up on recursion.

There is a basic principle: if you have a list
(a b c d)
(which, if you remember, is really:
(a . (b . (c . (d . ()))))
and if you can do...

Since a "hand" object is a list of cards, and you want to get a list of cards from a hand, all you need to do is return the hand:
(define (contents hand) hand)
Now, if a "hand" object were...

Yes. A card is a single object. If you want a list of cards, then store a list of cards, not a list of suits and ranks.


(define dead-mans-hand (list
(make-card 13 'spades)
(make-card 13...

There are no procedures in scheme, only functions. Whenever you say define, you are naming an expression that evaluates to something.

Hence, follow along:
(a-card 13 'spades) becomes
(make-card...

Good question! :-/

I do have to hit it fairly hard, and regularly. Sometimes with a good, heavy bludger. ;)

Yeah. As far as I am concerned, the computer is there to serve me, not the other way around. ;)

The MS article you linked references only which files may be corrupted for the error to occur....

If it is from any of the DOS 6.x series or Windows 9x then it is QBasic 1.1. However, the editor (EDIT.EXE) changed for Windows 9x. Since DOS 6 is a 16-bit OS and Win 9x is 32-bit, you might want to...

Hmm, I hadn't considered different versions. I'm using QBasic version 1.1, and everything is just piled in one folder on my G: drive. I run it from the default windows command prompt.

What version...

I'm running XP and QBasic and help work fine for me. I can't reproduce your problem. Sorry I can't help you further...

The file QBASIC.HLP is not a Windows Help file, so WinHelp cannot open it.
You need a program named HELP.COM. If you google olddos.exe you should find the Microsoft package that contains QBasic and...