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Re: [Q] How to get rid of {} ???

• To: mathgroup@smc.vnet.net
• Subject: [mg10799] Re: [mg10685] [Q] How to get rid of {} ???
• From: Reinhold Kainhofer <reinhold.kainhofer@kfunigraz.ac.at>
• Date: Thu, 5 Feb 1998 00:58:43 -0500
• References: <199801300924.EAA15320@smc.vnet.net.>

Alessandro Rossi wrote:

> Hi everyone again...
> I'm just curious to ask if is it possible to get rid of the {} simbols
> in a plain list of this kind {a1, a2, a3, ..., an} when you want to use
> the ordered sequence of a1, a2, a3, ..., an as arguments for a
> function.
>
> If I have the following list:
> list={True, False, True}
>
> how can I computethe And Function of the three arguments of list:
>
> And[True, False, True]
>
> obviously
>
> And[list]
>
> doesn't work...

Try And[Sequence@@list]. This Replaces the head List of {True, False,
True}, which is internally represented by List[True, False, True] by
Sequence.

Hope this helps
Reinhold

____________________________________________________________________
Reinhold Kainhofer  | e-mail: reinhold.kainhofer@kfunigraz.ac.at
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