There's nothing wrong with pr-str. Debug output should go to stderr.
user=> (def k (pr-str (for [x (range 5)]
(do (.println *err* x)
(.println *err* "nothing")
x))))
0
nothing
1
nothing
2
nothing
3
nothing
4
nothing
#'user/k
user=> k
"(0 1 2 3 4)"
On Saturday, February 9, 2013 2:41:23 PM UTC-8, AtKaaZ wrote:
>
> these examples to illustrate what you are saying:
>
> => (= "(debug 1\r\n2 nil 3)" (pr-str (lazy-seq (list 2 (println "debug" 1)
> 3))))
> true
>
>
> => (= "(1\r\n)" (pr-str (lazy-seq (println 1))))
> true
>
>
>
>
> On Sat, Feb 9, 2013 at 10:57 PM, Conrad <drc...@gmail.com <javascript:>>wrote:
>
>> For those reading this, the issue is NOT that output in the REPL looks
>> funny. The problem is that if, for instance, you put debug code into a
>> chunk of code that makes use of "pr-str" your debug code is actually
>> WRITTEN TO THE STRING. This is because "pr-str" works by using
>> "with-out-str". This seems clumsy and is undocumented IMHO and I am
>> wondering if other people feel the same.
>>
>>
>> On Saturday, February 9, 2013 12:30:20 PM UTC-6, Conrad wrote:
>>>
>>> I tested this in the latest 1.5.0-RC6:
>>>
>>> => (def k (pr-str (for [x (range 5)]
>>> (do (pr x)
>>> x))))
>>> #'user/k
>>> => k
>>> "(012340 1 2 3 4)"
>>>
>>> This seems wrong to me... I can see what would be needed to fix it in
>>> clojure/core.clj, but it would require creating several additional private
>>> functions. Does anyone know if this behavior is intentional?
>>>
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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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