(name :foo)
will return the name as a string
(symbol (name :foo))
Converts the name of the keyword to a symbol
On Wed, Jul 9, 2014 at 9:28 AM, Cecil Westerhof <cldwester...@gmail.com>
wrote:
> 2014-07-09 17:18 GMT+02:00 Thomas Heller <th.hel...@gmail.com>:
>
> Oh and its rare (outside of macros) to use symbols like that. Usually
>> you'd use keywords.
>>
>> (def object-locations
>> {:whiskey :living-room})
>>
>
> It is from 'Land of Lisp'. The symbols are printed. Or is it possible to
> print the keyword without the :?
>
>
>
>> On Wed, Jul 9, 2014 at 5:03 PM, Thomas Heller <th.hel...@gmail.com>
>> wrote:
>>
>>> Short and simple answer: NullPointerException
>>>
>>> (def object-locations nil)
>>>
>>> (object-locations 'bucket) will throw
>>> ('bucket object-locations) => nil
>>>
>>> HTH,
>>> /thomas
>>>
>>> On Wednesday, July 9, 2014 3:48:53 PM UTC+2, Cecil Westerhof wrote:
>>>>
>>>> When you have:
>>>> (def object-locations {
>>>> 'whiskey 'living-room
>>>> 'bucket 'living-room
>>>> 'chain 'garden
>>>> 'frog 'garden
>>>> 'dummy 'nowhere
>>>> 'test 'nowhere
>>>> })
>>>>
>>>> You can retrieve the location of the bucket with:
>>>> (object-locations 'bucket)
>>>> and with:
>>>> ('bucket object-locations)
>>>>
>>>> Personally I find the first better, but ‘Clojure Programming' uses the
>>>> second possibility. What is the better way and why?
>>>>
>>>
> --
> Cecil Westerhof
>
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