From: Thomas Morley <thomasmorley65@gmail.com>
To: calcium <calcium@disroot.org>
Cc: guile-user@gnu.org
Subject: Re: help : call function with args
Date: Thu, 5 Apr 2018 10:54:16 +0200 [thread overview]
Message-ID: <CABsfGyVV6g1T3FvdjM8y-AfmnKkvSXO0YK0SMHeeA7VqdzD_fA@mail.gmail.com> (raw)
In-Reply-To: <531867ae-fc67-35dc-e480-968678eed296@disroot.org>
2018-04-05 10:16 GMT+02:00 calcium <calcium@disroot.org>:
>> I think you'll find it easier to reason first about an f
>> which takes as many args as your conditionals produce, so
>> you won't be struggling to splice your "bunch of values"
>> into a bigger argument list.
>
> yes, thank you tomas,
> i stopped trying to return multiples values, and instead call the
> functions with the right numbers of args, and using the cond statement
> to change the values of args.
>
> (define (f a b c d)
> (+ a b c d))
>
> (let ((a 1)
> (b #f)
> (c #f)
> (d 10))
> (cond (#t (set! b 2)
> (set! c 3))
> (else
> (set! b 6)
> (set! c 10)))
> (f a b c d))
>
Not sure what you aim at.
Though, above seems to be easier with:
(define (f . rest) (apply + rest))
(f)
-> 0
(f 1 2 3)
-> 6
(f 1 2 3 4 5 6 7 8 9 10)
-> 55
Cheers,
Harm
next prev parent reply other threads:[~2018-04-05 8:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-05 8:16 help : call function with args calcium
2018-04-05 8:54 ` Thomas Morley [this message]
2018-04-05 9:42 ` calcium
[not found] <1f5de71a-c5aa-b850-023e-96fdd471dab5@disroot.org>
2018-04-04 8:01 ` calcium
-- strict thread matches above, loose matches on Subject: below --
2018-04-04 7:43 calcium
2018-04-04 14:39 ` tomas
2018-04-03 20:43 amnesia
2018-04-03 22:40 ` Mark H Weaver
2018-04-04 7:27 ` tomas
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