Introduction
by Michael Swaine
This book shows how five different languages approach the paradigm of functional programming. The chapters were written by experts in the different languages and first appeared as articles in PragPub magazine. After publishing nearly one hundred issues of the magazine, it became clear that we were in possession of a wealth of information about functional programming, and we decided that some of the best articles would make an interesting book.
Functional programming is one of the major paradigms of programming. In functional programming, we approach computation as the evaluation of mathematical functions, and as much as possible we avoid changing state and mutable data.
Certain concepts and issues are sure ...
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