[hath995]

I recall this guys blog, he seems a bit boastful, but it seems like a decent response to this question.

http://logicaltypes.blogspot.com/2015/08/pure-functional-pro...

[fapjacks]

Jeez. Whatever he's got to say, I couldn't see past the mountainous ego to get to it.

[hath995]

http://rea.tech/how-we-used-category-theory-to-solve-a-probl...

[_halgari]

Most of his stories are more related to immutable data, and proper programming, than anything else.