Hi out there,

after looking at rails and the pickaxe book (not totally red yet, just 
used as a reference) I still wondering when to use just a construct

:a => something

What does it stands for and when to use it? Please apologize if it's a 
basic questions, but I can't realize myself the usage.

If someone has a page no. in the pickaxe book, I'm glad to read the 
chapter ;)

Thanks in advance.
-- 
Daniel Vöěkerts
Protected by Anti Pesto.