[Haskell-cafe] Space leak when returning pairs?

[Shin-Cheng Mu]

Dear Henning,

On May 19, 2006, at 6:16 PM, Henning Thielemann wrote:
> On Fri, 19 May 2006, Shin-Cheng Mu wrote:
>>    idX :: [XMLEvent] -> ([XMLEvent], [XMLEvent])
>>    idX (StartEvent a : strm) =
>>      let (ts, strm') = idX strm
>>          (us, strm'') = idX strm'
>>      in (StartEvent a [] : ts ++ EndEvent a : us, strm'')
> let ~(ts, strm') = idX strm
>     ~(us, strm'') = idX strm'

Oh, I just tried using lazy patterns for the case for StartEvent
and TextEvent. But the space behaviour remained the same. :(

sincerely,
Shin-Cheng Mu