I found this macro I wrote really useful for exactly this type of thing:
https://github.com/markmandel/while-let
As long as you are happy for your go loop to stop when nil comes through
(i.e. when it gets closed).
(go (while-let [data (<! (channel))]
(println data)))
Mark
On Tue, Jan 14, 2014 at 4:34 PM, t x <[email protected]> wrote:
> Understood. Thanks for the clarification.
>
>
> On Mon, Jan 13, 2014 at 9:28 PM, Ben Mabey <[email protected]> wrote:
>
>> On Mon Jan 13 18:11:10 2014, t x wrote:
>>
>>> Consider the following code block:
>>>
>>>
>>> (defn make-stupid []
>>> (go (loop []
>>> (recur))))
>>>
>>> (def x (make-stupid))
>>>
>>> ;; ... is there a way to kill this infinite go-loop ?
>>>
>>
>> No, you can not kill the loop with the go channel that is bound to x.
>> You need to return a stop, a.k.a. poison, channel that the go block checks
>> before recurring. Something like:
>>
>> (let [stop (chan)]
>> (go
>> (loop []
>> (when (alt! stop false :default :keep-going)
>> ...
>> (recur))))
>> stop)
>>
>> -Ben
>>
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