foldl' is the right way to simulate the sequential IO action, foldr would
be doing it in reverse (and for large enough input will stack overflow).
On Thu, Aug 29, 2013 at 9:33 PM, Kyle Hanson wrote:
> Thanks Bob,
>
> I made it foldr because it was meant to simulate the sequential IO action
> th
Thanks Bob,
I made it foldr because it was meant to simulate the sequential IO action
that my server uses to populate the Map.
I found the problem to be that I need to force the map to evaluate so
adding a little $! fixed the problem
--
Kyle Hanson
On Thu, Aug 29, 2013 at 9:09 PM, Bob Ippoli
Building a map with foldr seems unwise, have you tried doing it with
fromListWith instead? Or foldl'? In either case, since you don't even put
the map into WHNF, none of the computation is done at all in either case
until the first lookup.
On Thu, Aug 29, 2013 at 3:35 PM, Kyle Hanson wrote:
> O
A good starting point is to estimate how much space you think the data
should take using e.g.
http://blog.johantibell.com/2011/06/memory-footprints-of-some-common-data.html
If you do that, is the actual space usage close to what you expected?
On Thu, Aug 29, 2013 at 5:35 PM, Kyle Hanson wrote
OK
I have a bunch of BSON documents that I convert to ByteStrings, put in a
Map, and write to a socket based on the response. I noticed some high
memory usage (in the GBs) so I decided to investigate. I simplified my
problem into a small program that demonstrates clearer what is happening.
I wrot
