The False Hope of Managing Effects with Tagless-Final in Scala
Tagless-final is a technique originally used to embed domain-specific languages into a host language, without the use of Generalized Algebraic Data Types. In the Haskell community, tagless-final still refers to a way of creating polymorphic programs in a custom DSL that are interpreted by instantiating them to a concrete data type. In the Scala community, however, tagless-final is used almost excl
Monoid - Wikipedia
Algebraic structures between magmas and groups. For example, monoids are semigroups with identity. In abstract algebra, a branch of mathematics, a monoid is a set equipped with an associative binary operation and an identity element. For example, the nonnegative integers with addition form a monoid, the identity element being 0. Monoids are semigroups with identity. Such algebraic structures occur
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