[Haskell-cafe] Tutorial on Haskell

Thomas Hartman tphyahoo at gmail.com
Mon Apr 16 05:54:52 EDT 2007

Give them a program that selects a bunch of files based on some
filtering criteria, and then does something to each file.

Kind of like find + xargs, but using haskell instead. Good recipe for sysadmins.

There was a recent example involving parsing raw emails into a thread here


Maybe that could be simplified and something could be based on that.

A one-liner using PCRE regex might also be of use.

2007/4/16, Simon Peyton-Jones <simonpj at microsoft.com>:
> Friends
> I have agreed to give a 3-hr tutorial on Haskell at the Open Source Convention 2007
>         http://conferences.oreillynet.com/os2007/
> I'm quite excited about this: it is a great opportunity to expose Haskell to a bunch of smart folk, many of whom won't know much about Haskell.  My guess is that they'll be Linux/Perl/Ruby types, and they'll be practitioners rather than pointy-headed academics.
> One possibility is to do a tutorial along the lines of "here's how to reverse a list", "here's what a type is" etc; you know the kind of thing.  But instead, I'd prefer to show them programs that they might consider *useful* rather than cute, and introduce the language along the way, as it were.
> So this message is to ask you for your advice.  Many of you are exactly the kind of folk that come to OSCON --- except that you know Haskell.   So help me out:
>         Suggest concrete examples of programs that are
>                 * small
>                 * useful
>                 * demonstrate Haskell's power
>                 * preferably something that might be a bit
>                         tricky in another language
> For example, a possible unifying theme would be this:
>         http://haskell.org/haskellwiki/Simple_unix_tools
> Another might be Don's cpu-scaling example
>         http://cgi.cse.unsw.edu.au/~dons/blog/2007/03/10
> But there must be lots of others.  For example, there are lots in the blog entries that Don collects for the Haskell Weekly Newsletter.  But I'd like to use you as a filter: tell me your favourites, the examples you find compelling.  (It doesn't have to be *your* program... a URL to a great blog entry is just fine.)  Of course I'll give credit to the author.
> Remember, the goal is _not_ "explain monads".  It's "Haskell is a great way to Get The Job Done".
> Thanks!
> Simon
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