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Re: How to mapcar or across a list?
From: |
Marcin Borkowski |
Subject: |
Re: How to mapcar or across a list? |
Date: |
Wed, 15 Jul 2015 22:55:15 +0200 |
On 2015-07-15, at 22:42, Rasmus <rasmus@gmx.us> wrote:
> Marcin Borkowski <mbork@mbork.pl> writes:
>
>> Hi there,
>>
>> so here's my problem: I have a list of Boolean values, and I want to
>> `mapcar' an `or' across it (IOW, I want to test whether at least one of
>> them is true). Of course, (apply #'or my-list) does not work. Of
>> course, I can (cl-reduce (lambda (x y) (or x y)) my-list) -- but is
>> there a better method?
>>
>> BTW, my-list doesn't really exist: it is a result of `mapcar'ing
>> a function taking some value and yielding a Boolean value, so bonus
>> points if the method does not process the whole list.
>
> Does cl-some and cl-every fit the bill?
Ha. Their only drawback is that I didn't know about them...
> Rasmus
Thanks!
--
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University
- How to mapcar or across a list?, Marcin Borkowski, 2015/07/15
- Re: How to mapcar or across a list?, Rasmus, 2015/07/15
- Re: How to mapcar or across a list?,
Marcin Borkowski <=
- Re: How to mapcar or across a list?, John Mastro, 2015/07/15
- Re: How to mapcar or across a list?, Emanuel Berg, 2015/07/15
- Message not available
- Re: How to mapcar or across a list?, Pascal J. Bourguignon, 2015/07/15
- Re: How to mapcar or across a list?, Emanuel Berg, 2015/07/15
- never use `eval' (was: Re: How to mapcar or across a list?), Emanuel Berg, 2015/07/15
- Re: never use `eval' (was: Re: How to mapcar or across a list?), John Mastro, 2015/07/15
- Re: never use `eval' (was: Re: How to mapcar or across a list?), Emanuel Berg, 2015/07/15
- Re: never use `eval' (was: Re: How to mapcar or across a list?), John Mastro, 2015/07/15
- Message not available
- Re: never use `eval' (was: Re: How to mapcar or across a list?), Barry Margolin, 2015/07/15
- Message not available
- Re: never use `eval' (was: Re: How to mapcar or across a list?), Barry Margolin, 2015/07/15