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Due to ClojureScript I have been going about learning Clojure the past few weeks. For anyone in a similar boat found a fun little site http://4clojure.com/ that teaches you Clojure by coding on the website which is pretty cool.


OT: Why do sites impose these arbitrary limitations on username and passwords? I have a standard username/password that I use for sites that don't require super-tight security, and they don't work with their policies. It sort of makes me not want to create an account.


https://github.com/4clojure/4clojure/issues

I think the only restriction is passwords being more than 7 characters, but if you raise a ticket the team _will_ look at it.


Here is a copy of the field labels on the 'register' page:

Username (4-13 chars.) Password (7+ chars.) Repeat Password Email


4clojure is great:

- It starts very gentle but progresses quite rapidly.

- The problems are small and geared towards idiomatic functional programming, which is why I found it more useful than projecteuler for learning Clojure.

- There's also a neat code golf/comparison feature, so you can compare your solutions to others.


You can now also follow other users and see their solutions... not always idiomatic (esp with the code golfers) but it still gives great insight to different ways to solve problems. Also, its not just for beginners, there are some genuinely hard problems on there.




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