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Re: seq-some-p and nil

From: David Kastrup
Subject: Re: seq-some-p and nil
Date: Wed, 23 Sep 2015 10:44:49 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

Nicolas Petton <address@hidden> writes:

> Simen Heggestøyl <address@hidden> writes:
> Hi Simen,
>> Ah, sorry, I should have been clearer. What I meant was that it could
>> guarantee to return the *first* non-nil value that resulted from
>> applying the predicate, like in CL.
>> So for instance, (seq-some #'1+ '(1 3 5)) could guarantee to return 2,
>> not 4 or 6.
> You lost me.  Isn't that exactly what `seq-some' does?
>     (seq-some #'1+ '(1 3 5)) ;; => 2
> Or did you mean that the documentation of `seq-some' should state that
> `seq-some' returns the first non-nil value?

Yes, I think that's what he wants in order to have some reassurance
against the "I've altered the semantics.  Pray I don't alter them any
further." phenomenon.

David Kastrup

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