[Haskell-cafe] Is there a library that has a strict version of `sum`?

[Yitzchak Gale]

Another important data point:

When default optimization is enabled, GHC recognizes that the sum
should be strict.

That, together with the historical context explained by Brandon, is
the reason why the definition of sum has not changed. It has been
discussed numerous times on this list and in various other forums in
the community over the years.

Regards,
Yitz

On Thu, Aug 16, 2018 at 6:46 PM, André Popovitch
<andre at andreisawesome.com> wrote:
> +1, I would even think strict sum should be the default
>
>
> On Wed, Aug 15, 2018, 8:08 AM Michael Snoyman <michael at snoyman.com> wrote:
>>
>>
>>
>> On Wed, Aug 15, 2018 at 8:40 AM Tom Ellis
>> <tom-lists-haskell-cafe-2017 at jaguarpaw.co.uk> wrote:
>>>
>>> On Tue, Aug 14, 2018 at 08:50:01PM +0200, Damian Nadales wrote:
>>> > On Tue, Aug 14, 2018 at 8:08 PM Bryan Richter <b at chreekat.net> wrote:
>>> > > On 08/14/2018 11:22 AM, Damian Nadales wrote:
>>> > > is there something wrong with sum in particular?
>>> >
>>> > From the point of view of somebody that is not that bright, like
>>> > myself,
>>> > it seems. Why would you need to build a huge thunk containing the
>>> > representation of a sum of values. It is not that you can pattern match
>>> > on
>>> > integers or consume the sum incrementally.
>>> >
>>> > I apologize if I infuriate people, but I really don't get the
>>> > usefulness of
>>> > a lazy sum function.
>>> >
>>> > > More generally, why isn't sum working for you?
>>> >
>>> > Because if I want to test my function with 100000000 values it consumes
>>> > a
>>> > lot of memory.
>>>
>>> Your rationale seems utterly reasonable and I'm surprised that you've
>>> even
>>> been asked to provide it.  Everyone knows the problems with lazy sum.
>>> I'm
>>> actually astonished (and sorry) about the pushback you've received here.
>>> Having easy access to a sum function that doesn't blow up and *not*
>>> having
>>> easy access to one that does seem self evidently worthwhile.
>>>
>>> Tom
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>>
>>
>> +1, I agree with this wholeheartedly.
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