On 2008 May 12, at 22:18, Jeff Polakow wrote:
Then, I immediately blow my stack if I try something like:
mean [1..1000000000].
The culprit is actually sum which is defined in the base libraries as either a foldl or a direct recursion depending on a compiler flag. In either case, the code is not strict enough; just trying to compute:
sum [1..10000000]
There's also an insufficient-laziness issue with enumerations in at least some versions of the standard library, IIRC. meaning that just saying [1..10000000] can introduce a space leak that can lead to a stack blowout. -- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery@kf8nh.com system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu electrical and computer engineering, carnegie mellon university KF8NH