Just did a few job searches for contracts in London. 0 jobs available for most of the "cool" languages, but some for clojure, 4 for go, and hundreds for java,

Just did a few job searches for contracts in London. 0 jobs available for most of the "cool" languages, but some for clojure, 4 for go, and hundreds for java, C++, C#. So, it depends if he wants to get paid or just learn for the sake of learning.