Donn Cave schrieb:
> The ordinary lambda comes close - in ghc anyway, it supports
> pattern matching. But I can't work out the syntax for multiple
> cases, which would obviously be needed to make it practically
> useful.
>
> e.g., this seems to be OK:
> getArgs >>= \ (a:_) -> putStrLn (show a)
>
> but how do you write
> getArgs >>= \ [] -> putStrLn "(no arguments)"
> (a:_) -> putStrLn (show a)
>
> (pardon me if I missed where you were going in "case of ...")
Sorry, I'm just jumping into this discussion, but why shouldn't the
above work? I.e. extend lambda to accept a group of patterns:
\{Pat1 -> exp1; Pat2 -> exp2; Pat3 -> exp3}
?
Regards,
Sven Moritz
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