Better Encoding With Monoids in Scala
Let's learn about monoids.
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Monoid has its root in abstract algebra. It is a semigroup with an identity; in other words, it has an associative binary operation and an identity element. In Scala, we can define it as follows:
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In this article, we will discuss the law of Monoid from a Scala developer’s perspective, how it works in Scala, and various useful encoding patterns using Monoid.
The Monoid Law
The Monoid law is the combination of the law of associativity and the law of identity. A monoid consists of the following: