Preface
I like functional programming languages. One of my favorite features is native immutability. Some functional languages, by default, don't let you change values. What's amazing about this capability is that you can't accidentally break your application by mutating data at the wrong time. If you try, the code won't even compile.
I also dislike certain aspects of functional programming languages. On one hand, it's great that immutability is enforced the way it is. On the other hand, there are times when I just need to push aside my functional programming principles and get the job done.
The JavaScript language has many useful functional programming features out of the box. You don't need a library to compose higher-order functions, for ...
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