Re: [Haskell-beginners] Just how unsafe is unsafe

On Thu, Feb 5, 2009 at 3:11 PM, Andrew Wagner wrote:

So we all know the age-old rule of thumb, that unsafeXXX is simply evil and anybody that uses it should be shot (except when it's ok). I understand that unsafeXXX allows impurity, which defiles our ability to reason logically about haskell programs like we would like to. My question is, to what extent is this true?

Tangential to all of this - sometimes my unsafeXXX functions are pure, but partial. So I'll have: foo :: a -> b -> Maybe c and unsafeFoo :: a -> b -> c -Antoine