Re: [Haskell-cafe] What is the meaning of tilde ("~") symbol

On 14 February 2010 22:11, Evan Laforge wrote:

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Finally, it is the array subscript operator:

let x = arr ! 10

Shouldn't this be

let x = arr !! 10

!! is the list subscript.  Look in Data.Array.IArray for (!).  Or Data.Map.

There's still no consensus on typeclasses for collections, so these are all separate functions.  Has anyone taken a shot at a set of AT-using classes for the standard collections?

Oops, thanks. That is a really useful page (http://www.haskell.org/haskellwiki/Keywords).