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klapaucius/ghc-heap-view.hs

Last active January 3, 2016 23:39
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ghc-heap-view.hs
> import GHC.HeapView
>
let evLength n l = do
ht <- buildHeapTree n (asBox $ l)
let cnt (HeapTree _ (ConsClosure {ptrArgs = [hd,tl]})) = 1 + cnt tl
cnt _ = 0
return $ cnt ht
> let l = [1..]
> l !! 10
11
> evLength 10000 l
11
> l !! 100
101
> evLength 10000 l
101
> l !! 1000
1001
> evLength 10000 l
1001
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