Good Haskell coding style of if/else control block?

Question

I\'m learning Haskell in the hope that it will help me get closer to functional programming. Previously, I\'ve mostly used languages with C-like syntax, like C, Java, and D.

Answer 1

The way Haskell interprets if ... then ... else within a do block is very much in keeping with the whole of Haskell's syntax.

But many people prefer a slightly different syntax, permitting then and else to appear at the same indentation level as the corresponding if. Therefore, GHC comes with an opt-in language extension called DoAndIfThenElse, which permits this syntax.

The DoAndIfThenElse extension is made into part of the core language in the latest revision of the Haskell specification, Haskell 2010.