Customer Review

27 of 31 people found the following review helpful
4.0 out of 5 stars Best Haskell book, but not perfect, March 7, 2009
This review is from: Real World Haskell (Paperback)
This is probably the best book on Haskell available.

That said, there were some things I didn't like about it.

The biggest annoyance is that the example in Chapter 12 doesn't actually work. The point is to teach Haskell, not how to read barcodes, but example code that doesn't work just seems sloppy.

I'm also not a big fan of how the code samples are spread out over several pages, with a comment stating which file they belong to. Mostly just a pet peeve, but it does cause some problems because there are a few places where the code references variables or types that haven't been declared yet, so the code won't actually compile until you get further along. Not the end of the world, but the book suggests compiling often to avoid errors and the end of each code snippet would be a natural place to do that.

There are also a few language features that are used but not really explained or used before they're explained. The $ operator, for example, is used on page 165 (among other places), but is only briefly explained on page 248. In that case, even when $ is explained it's incidental to explaining something else (fmap and <$>).
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