Of course, in this circumstances, infinitely long lists are not going to
behave well either.

But, it seems to me, that this is (or should be) independent of
interactive use in the REPL. The current behaviour is never nice.
Probably, there needs to be a *interactive-print-length* var or
equivalent.

Andy Fingerhut <andy.finger...@gmail.com> writes:

> One argument for default value of *print-length* being nil: Plenty of
> people print Clojure data structures to files and later read them back in.
> The data would be corrupted if *print-length* was a too-small numeric value
> for your particular data.  It might not be obvious until much later that
> you have lost data.
>
> Andy
>
>
> On Tue, Apr 1, 2014 at 9:00 AM, Andreas Liljeqvist <bon...@gmail.com> wrote:
>
>> Is there any good reason for not providing a default value for
>> *print-length*?
>> I think that if you *really* want to print a list containing 100K items,
>> you would have to set *print-length*.
>>
>> Basically it seems less harmful to set it to a nice value by default(42?)
>> than possible locking up the REPL.
>>
>>
>> On Tue, Apr 1, 2014 at 2:49 AM, Gary Trakhman <gary.trakh...@gmail.com>wrote:
>>
>>> http://clojuredocs.org/clojure_core/clojure.core/*print-length*
>>>
>>>
>>> On Mon, Mar 31, 2014 at 8:49 PM, Christopher Howard <cmhowa...@alaska.edu
>>> > wrote:
>>>
>>>> Is there some kind of "safe" function for printing representations of
>>>> lazy, infinite data structures? I'm finding I like using them inside
>>>> other data structures here and there. However, when I go to play
>>>> around with things in the REPL, sooner or later my workflow is
>>>> interrupted by 3 million characters streaming across the console.
>>>>
>>>> I don't imagine there would be any way for the REPL to detect that a
>>>> lazy sequence was infinite. However, if it would simply refuse to
>>>> evaluate lazy sequence (say, represent them by some special identifier)
>>>> that
>>>> would be good enough for me.
>>>>
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-- 
Phillip Lord,                           Phone: +44 (0) 191 222 7827
Lecturer in Bioinformatics,             Email: phillip.l...@newcastle.ac.uk
School of Computing Science,            
http://homepages.cs.ncl.ac.uk/phillip.lord
Room 914 Claremont Tower,               skype: russet_apples
Newcastle University,                   twitter: phillord
NE1 7RU                                 

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