Comparing Haskell's Snap and Yesod web frameworks

Question

The two Haskell web frameworks in the news recently are Yesod (at 0.8) and Snap (at 0.4).

It\'s quite obvious that Yesod currently supports a lot more features than

Answer 1

You probably referring to old version of yesod. Latest yesod versions have plain syntax for html, javascript and css.

The html syntax of yesod's template library hamlet is plain html with complete opening and closing tags and all normal html attributes. Yes you can omit closing tags and use shortcuts for id and class attributes. But you do not have to. You can continue to write plain html.

Not only that but html templates can reside in separate files, just like in Snap's template library Heist.

Java script templates (julius) are plain javascript files, also residing in separate files.

The css template does indeed have a different syntax, but recent version of yesod now provides also plain css syntax.

If you go with Heist you will not have type safe urls.

In Heist html templates are read from harddrive everytime. Yesod compiles all templates directly into the executable. No file is read from harddrive. Thus the response is much faster. You can see the benchmarks yourself.

In Yesod you can create widgets that cooperate nicely. Snap does not deal with widgets at all. You will have to roll your own.