Re: How to mapcar or across a list?

[Marcin Borkowski]

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