a taste of haskell

Concise and well put together intro to haskell

http://programming-musings.org/2007/08/04/a-taste-of-haskell/

and of course

http://www.haskell.org/haskellwiki/Learn_Haskell_in_10_minutes

Ruby (and rails)

So I've decided to learn Ruby and Rails. Just some links I've found useful in getting started.

Of course there is all the *nix/win32 env install crap, rvm seems to be THE choice, and since I'm using linux, it's easy enough.

Good entry point for a web developer.

http://ruby.railstutorial.org/ruby-on-rails-tutorial-book?version=3.2

A cross platform textmate like editor that may be worth looking into.

http://www.sublimetext.com/2

Further reading

http://www.amazon.com/gp/product/0321601661

http://www.amazon.com/gp/product/1933988657

Neat for the lazy learner. Threads are short here but interesting.

http://railscasts.com

Comming with considerable php experience this was nice to see how CGI has been plugged into Ruby (Ruby->Rack->Rails)

http://rubysource.com/php-vs-ruby-whats-the-point/

more to come ...

Bash string replace

I was using sed for template substitution recently and it seemed that no matter what regex delimiter I chose, that char existed in the template and caused my template population (sed replace) to fail. Fortunately bash has string substitution built right in, albeit with some slightly strange syntax.

# replace all @ chars with \@

x=${x//@/\\@}

now we can freely sub in values for our template variables w/o having to worry if they contain @ characters

#$1 = file name

#$2 = template variable name

sed -i s@$2@$x@g templates/$1