because it is a macro, I am not sure it can work for y. (my macro skills
are limited)
but in the general case where the data is not available at compile time. I
am not sure macros will help.
On Sunday, 3 March 2013 23:44:56 UTC+11, AtKaaZ wrote:
>
> oo, what do we have here?
> => (defmacro get-lexical-asvar [q]
> (let [
> oem (zipmap (keys &env) (vals &env))
> zz (.var (.init (second (find oem q))))
> ]
> `~zz
> )
> )
> #'runtime.q/get-lexical-asvar
> => (let [x assoc
> y x]
> (str (get-lexical-asvar x))
> )
> "#'clojure.core/assoc"
>
> but it doesn't (yeT) work for y
>
>
> On Sun, Mar 3, 2013 at 1:27 PM, AtKaaZ <atk...@gmail.com <javascript:>>wrote:
>
>> ok you're right, it's impossible to get the var since those x and y are
>> already resolved to the function, and multiple vars could point to the same
>> function anyway.
>>
>> => (let [x assoc
>> y x]
>> (get-lexical-env)
>> )
>> {x #<core$assoc clojure.core$assoc@35fcd90c>, y #<core$assoc
>> clojure.core$assoc@35fcd90c>}
>>
>> for consistency, ignore the following:
>> ;the following is inspired from
>> http://blog.jayfields.com/2011/02/clojure-and.html
>> (defmacro get-lexical-env []
>> "
>> => (let [a 1 b (+ 1 2)]
>> (let [c (do \"a\" \"b\")]
>> (q/get-lexical-env)
>> )
>> )
>> {a 1, b 3, c \"b\"}
>> "
>> (let [envkeys (keys &env)]
>> `(zipmap (quote ~envkeys) (list ~@envkeys))
>> )
>> )
>>
>> (defmacro show-lexical-env []
>> `(clojure.pprint/pprint (get-lexical-env))
>> )
>>
>>
>> On Sun, Mar 3, 2013 at 1:05 PM, AtKaaZ <atk...@gmail.com <javascript:>>wrote:
>>
>>> that's true but I thought you meant in general
>>> basically, I'm looking for a way to get the var... ie.
>>> => (let [x assoc
>>> y x]
>>> *(var y)*
>>> )
>>> CompilerException java.lang.RuntimeException: Unable to resolve var: y
>>> in this context, compiling:(NO_SOURCE_PATH:3:3)
>>>
>>> => (let [x assoc
>>> y x]
>>> y
>>> )
>>> #<core$assoc clojure.core$assoc@35fcd90c>
>>> => (var assoc)
>>> #'clojure.core/assoc
>>>
>>>
>>> something that can replace that (var y) with something that actually
>>> gets the var that y resolves to.
>>>
>>>
>>>
>>> On Sun, Mar 3, 2013 at 12:58 PM, Dave Sann <dave...@gmail.com<javascript:>
>>> > wrote:
>>>
>>>> I think, that will only work if you do it directly.
>>>>
>>>> It will not work in the example I gave.
>>>>
>>>> Dave
>>>>
>>>>
>>>> On Sunday, 3 March 2013 22:43:14 UTC+11, AtKaaZ wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Sun, Mar 3, 2013 at 12:21 PM, Dave Sann <dave...@gmail.com> wrote:
>>>>>
>>>>>> This may be a question for clojure dev
>>>>>>
>>>>>> I find myself wanting to be able to print data-structures containing
>>>>>> resolvable functions
>>>>>>
>>>>>> e.g.
>>>>>>
>>>>>> (let [x assoc] (str [x :a :b]))
>>>>>>
>>>>>> would be:
>>>>>>
>>>>>> "[#fn clojure.core/assoc :a :b]"
>>>>>>
>>>>>> or similar, rather than the current:
>>>>>>
>>>>>> "[#<core$assoc clojure.core$assoc@6d289e48> :a :b]"
>>>>>>
>>>>>> which is unreadable.
>>>>>>
>>>>>> I can read this tag very easily, using the data-reader
>>>>>>
>>>>>> {fn resolve} or,
>>>>>>
>>>>>> (set! *data-readers* {'fn resolve})
>>>>>>
>>>>>>
>>>>>>
>>>>>> But I don't know of any way to get the name and namespace of a
>>>>>> function to write it out.
>>>>>>
>>>>> Did you mean this?
>>>>> => (meta #'assoc)
>>>>> {:ns #<Namespace clojure.core>, :name assoc, :arglists ([map key val]
>>>>> [map key val & kvs]), :column 1, :added "1.0", :static true, :doc
>>>>> "assoc[iate]. When applied to a map, returns a new map of the\n same
>>>>> (hashed/sorted) type, that contains the mapping of key(s) to\n val(s).
>>>>> When applied to a vector, returns a new vector that\n contains val at
>>>>> index. Note - index must be <= (count vector).", :line 177, :file
>>>>> "clojure/core.clj"}
>>>>>
>>>>>
>>>>>> I think this is not possible at the moment.
>>>>>>
>>>>>>
>>>>>> Anyone?
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> Dave
>>>>>>
>>>>>> --
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Please correct me if I'm wrong or incomplete,
>>>>> even if you think I'll subconsciously hate it.
>>>>>
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>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Please correct me if I'm wrong or incomplete,
>>> even if you think I'll subconsciously hate it.
>>>
>>>
>>
>>
>> --
>> Please correct me if I'm wrong or incomplete,
>> even if you think I'll subconsciously hate it.
>>
>>
>
>
> --
> Please correct me if I'm wrong or incomplete,
> even if you think I'll subconsciously hate it.
>
>
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