[Haskell-beginners] What's this [f| data |] ??
Carlos J. G. Duarte
carlos.j.g.duarte at gmail.com
Wed Jul 4 04:10:59 CEST 2012
Hi. I'm trying to get into haskell in my free time. I have already
covered some syntax, but there's plenty to do yet, and when I'm
consulting other people's stuff, I find lots of unknown constructs to
me, which turns harder to lookup for, due to the very "symbolic" nature
For instance, on this http://www.yesodweb.com/blog/2012/04/yesod-js-todo
they have a few constructs like this:
|mkYesod "App" [parseRoutes|
/todoTodosR GET PUT
/todo/#TodoId TodoR GET DELETE
It seems that the inline text is going to be fed to parseRoutes. How
does that constructs work (links?)? I already know list comprehensions
which appear to be related with this.
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