Looks good to me.
I wasn't familiar with the docs around (seq x) vs (not (empty? x)). That
seems like a good place to draw the language from.
-kb
On Tue, Jun 14, 2011 at 1:43 PM, Ambrose Bonnaire-Sergeant <
abonnaireserge...@gmail.com> wrote:
> Inspired by "seq"/"empty?" docstrings.
>
> not-any?
>
> Returns false if (pred x) is logical true for any x in coll,
> else true - same as (not (some pred coll)).
>
>
> some
>
> Returns the first logical true value of (pred x) for any x in coll,
> else nil. One common idiom is to use a set as pred, for example
> this will return :fred if :fred is in the sequence, otherwise nil:
> (some #{:fred} coll)
> Please use the idiom (not-any? pred coll) rather than (not (some pred
> coll))
>
> Thoughts?
>
> Ambrose
>
> On Wed, Jun 15, 2011 at 2:31 AM, Kevin Baribeau
> <kevin.barib...@gmail.com>wrote:
>
>> I actually had the same thought as the OP when reading through docs not
>> too long ago.
>>
>> +1 for adding a pointer to "some" in the docstring of "not-any?"
>>
>> -kb
>>
>> On Tue, Jun 14, 2011 at 11:29 AM, Ambrose Bonnaire-Sergeant <
>> abonnaireserge...@gmail.com> wrote:
>>
>>> Hi David,
>>>
>>> any? would be redundant and less general than some, if I am not mistaken.
>>> Compare the docstrings for the hypothetical "any?".
>>>
>>> (some p coll)
>>> Returns the *first logical true value* of (pred x) for any x in coll,
>>> else *nil*.
>>>
>>> (any? p coll)
>>> Returns *true* if (pred x) is logical true for any x in coll,
>>> else *false*.
>>>
>>>
>>> Since *nil* and *false* are both falsy, "some" can be used as a
>>> predicate that is truthy
>>> when it finds truthy result, otherwise falsy. This is exactly the
>>> behavior expected from
>>> an any? function.
>>>
>>> "some" is a poster boy for Clojure's well thought out truthyness system,
>>> this is a great example
>>> of the types of general functions it allows.
>>>
>>> Perhaps a pointer to "some" should be added in the docstring of
>>> "not-any?". Although
>>> a quick look at the source makes it crystal clear. I wasn't aware of
>>> "not-any?"s existence,
>>> maybe noting it in "some"s docstring could be beneficial also.
>>>
>>> Thanks,
>>> Ambrose
>>>
>>> On Tue, Jun 14, 2011 at 3:08 PM, de1976 <davidescobar1...@gmail.com>wrote:
>>>
>>>> Hello everyone. In looking through the API documentation, I've noticed
>>>> that there is a "not-any?" function available, but there is no
>>>> corresponding inverse "any?" function that I can find. There are,
>>>> however, "every?" and "not-every?" functions available. The closest I
>>>> could find was "some", but wouldn't it make sense to have an "any?"
>>>> function for more obvious consistency? Thanks.
>>>>
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