Found it very useful in last days.
How about doing some Open Source coding instead Kata?
Least common multiple
If you look at Problem 5 of Project Euler and would like to solve it using Clojure,
you might find this fork of cojure-contrib quite useful.
Least common multiple will now accept more than two arguments.
Interface design
While designing API make sure to take special care of how users of API can communicate errors back to you.
In general it’s a #fail to provide user with multiple options of communicating failure to you.
For example I made it possible to user to return false or throw exception to say something went wrong.
Week after I wrote it I got confused by this code.
asserting it right
assertTrue(integer == 4);
Why would you write this?
Much better is to do:
assertEquals("Meaning of this number", 4, integer);
That way you didn’t wrote much more than before, but when this test fails people know what failed.
