Conrad Barski's Haskell Tutorial

#1

Post by icey » Sun, Jul 14, 2013, 5:47 PM UTC

Conrad Barski's Haskell Tutorial
lisperati.com

Re: Conrad Barski's Haskell Tutorial

#2

Post by apgwoz » Sun, Jul 14, 2013, 6:25 PM UTC

Picnicmob was a really clever idea. I think I remember that it got cancelled though, which was unfortunate.

I like the tutorial though. I'd be willing to bet it's his style and work that inspired the "Learn you a..." books. The Haskell one is great, and so is the Erlang one.

Re: Conrad Barski's Haskell Tutorial

#3

Post by drcode » Sun, Jul 14, 2013, 6:53 PM UTC

Wow, how did my Haskell tutorial get to the HN front page out of nowhere? :-)

If you like my stuff, keep an eye out for my new Bitcoin book, which will be coming out this fall. I've been slaving over the artwork for months, it should be a beautiful book! The working title is "Bitcoins for the Befuddled".

Re: Conrad Barski's Haskell Tutorial

#4

Post by frou_dh » Sun, Jul 14, 2013, 7:10 PM UTC

ghc 7.6.3 (brew) installed on OS X doesn't like the first code presented (System.Random, Text.Regex and StdGen aren't found).

Re: Conrad Barski's Haskell Tutorial

#5

Post by icey » Sun, Jul 14, 2013, 7:17 PM UTC

drcode wrote: post #3

Wow, how did my Haskell tutorial get to the HN front page out of nowhere? :-) If you like my stuff, keep an eye out for my new Bitcoin book, which will be coming out this fall. I've been slaving over the artwork for months, it should be a beautiful book! The working title is "Bitcoins for the Befuddled".

If you're genuinely curious, I found it on the Haskell subreddit today!

Re: Conrad Barski's Haskell Tutorial

#6

Post by lelf » Sun, Jul 14, 2013, 7:22 PM UTC

> In Haskell, this type of integer can't get bigger than 2^31...

It's platform-dependent

  h> finiteBitSize (0 :: Int)
  64

> We could have used the type Integer instead- This type of integer grows "magically" and can hold any sized integer, no matter how big... but it's slower, so we used Int instead, since our numbers will never get that big.

Premature optimisation at its best.

Re: Conrad Barski's Haskell Tutorial

#7

Post by mietek » Sun, Jul 14, 2013, 7:24 PM UTC

frou_dh wrote: post #4

ghc 7.6.3 (brew) installed on OS X doesn't like the first code presented (System.Random, Text.Regex and StdGen aren't found).

`brew install haskell-platform` should help.

Re: Conrad Barski's Haskell Tutorial

#8

Post by [deleted] » Sun, Jul 14, 2013, 7:57 PM UTC

mietek wrote: post #7

frou_dh wrote: post #4

ghc 7.6.3 (brew) installed on OS X doesn't like the first code presented (System.Random, Text.Regex and StdGen aren't found).

`brew install haskell-platform` should help.

[deleted]

Re: Conrad Barski's Haskell Tutorial

#9

Post by seako » Sun, Jul 14, 2013, 8:40 PM UTC

apgwoz wrote: post #2

Picnicmob was a really clever idea. I think I remember that it got cancelled though, which was unfortunate. I like the tutorial though. I'd be willing to bet it's his style and work that inspired the "Learn you a..." books. The Haskell one is great, and so is the Erlang one.

don't forget _why's (poignant) guide to ruby http://mislav.uniqpath.com/poignant-guide/

Re: Conrad Barski's Haskell Tutorial

#10

Post by pogden » Sun, Jul 14, 2013, 8:59 PM UTC

lelf wrote: post #6

> In Haskell, this type of integer can't get bigger than 2^31... It's platform-dependent h> finiteBitSize (0 :: Int) 64 > We could have used the type Integer instead- This type of integer grows "magically" and can hold any sized integer, no matter how big... but it's slower, so we used Int instead, since our numbers will never get that big. Premature optimisation at its best.

In Haskell you can also use the Integral typeclass to make functions polymorphic to Int and Integer.