Not that I am aware of. do is special to allow macros expanding into
several defs where the later depend on the former.
(defmacro foo [a b]
`(do
(def ~a 5)
(def ~b ~a)))
This is necessary, because a macro can only return one form.
And the name resolution for ns is special-cased, IIRC.
Meikel
2013/9/20 Colin Fleming <colin.mailingl...@gmail.com>
> This is interesting - are there any other cases where forms are treated
> specially at top-level?
>
>
> On 20 September 2013 10:01, Gary Verhaegen <gary.verhae...@gmail.com>wrote:
>
>> As Meikel said in his previous mail, 'do' at the top-level is treated
>> specially: each form is treated as a separate top-level form. This is, for
>> example, useful for defining a macro that defines multiple functions.
>>
>> So what Meikel was really trying to say is that the reason (do (intern
>> 'user 'bob3 3) bob3) works is that it is treated the same as
>> (intern 'user 'bob3 3)
>> bob3
>>
>> This special handling only occurs when do appears as a top-level form,
>> which is the reason why your other examples fail.
>>
>> On Thursday, 19 September 2013, Phillip Lord wrote:
>>
>>> "Meikel Brandmeyer (kotarak)" <m...@kotka.de> writes:
>>> > Clojure's compile unit is one toplevel form. Therefore
>>> >
>>> > (intern 'user 'bob3 3)
>>> > bob3
>>> >
>>> > works, while
>>> >
>>> > (is (do (intern 'user 'bob2 2) bob2))
>>> >
>>> > does not, because the former are two compilation units while the
>>> latter is
>>> > only one. (Note: (do ...) is a special case. (do (intern 'user 'bob3 3)
>>> > bob3) should actually work.)
>>>
>>> Yep, do on it's own does work.
>>>
>>> The problem, here, then is that a chunk of code like
>>>
>>> (do (intern 'user 'bob3 3) bob3)
>>>
>>> Sometimes works, and sometimes doesn't. And whether it does or does not
>>> depends on it's context. As I said in the last post, I'd worked out why
>>> the immediate reason it fails. But I cannot understand from looking at
>>> the code why
>>>
>>> (do (intern 'user 'bob3 3) bob3)
>>>
>>> is two compilation units, while
>>>
>>> (is (do (intern 'user 'bob3 3) bob3))
>>>
>>> or
>>>
>>> (try (do (intern 'user 'bob3 3) bob3))
>>>
>>> are both one (the latter fails also).
>>>
>>> Seems rather like a bug to me. If the compiler can identify that
>>>
>>> (is (do (def bob3) bob3))
>>>
>>> is valid, the same should be true for an intern form.
>>>
>>> Phil
>>>
>>> --
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "Clojure" group.
>>> To post to this group, send email to clojure@googlegroups.com
>>> Note that posts from new members are moderated - please be patient with
>>> your first post.
>>> To unsubscribe from this group, send email to
>>> clojure+unsubscr...@googlegroups.com
>>> For more options, visit this group at
>>> http://groups.google.com/group/clojure?hl=en
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "Clojure" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to clojure+unsubscr...@googlegroups.com.
>>> For more options, visit https://groups.google.com/groups/opt_out.
>>>
>> --
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Clojure" group.
>> To post to this group, send email to clojure@googlegroups.com
>> Note that posts from new members are moderated - please be patient with
>> your first post.
>> To unsubscribe from this group, send email to
>> clojure+unsubscr...@googlegroups.com
>> For more options, visit this group at
>> http://groups.google.com/group/clojure?hl=en
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "Clojure" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to clojure+unsubscr...@googlegroups.com.
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>
> --
> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/clojure?hl=en
> ---
> You received this message because you are subscribed to a topic in the
> Google Groups "Clojure" group.
> To unsubscribe from this topic, visit
> https://groups.google.com/d/topic/clojure/JMNLZ5slcqI/unsubscribe.
> To unsubscribe from this group and all its topics, send an email to
> clojure+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/groups/opt_out.
>
--
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
