Re: [Haskell-cafe] Most Important GHC extensions to learn/use?

wren ng thornton writes:

There are a bunch which are mostly just syntax changes. The important ones are:

Also, if you have new GHC, it will often tell you if/when you need to enable extensions. E.g.: Line 8: 1 error(s), 0 warning(s) `Pos' has no constructors (-XEmptyDataDecls permits this) In the data type declaration for `Pos' -k -- If I haven't seen further, it is by standing in the footprints of giants