Haskell functions can take functions as parameters and return them as values. A function that does either of those is called a hgiher-order function (HOF). Every function in Haskell officially onlt ...

A higher-order function in Haskell is a function that either takes in a function as its argument or returns a function as its result. We have already seen how functions return other functions as their ...

In Erlang, higher-order functions are functions that accept other functions as arguments or return them as results, aligning closely with HOFs in languages like Haskell, Lisp, and Scala.

Instead, use a higher-order function to calculate the answer in one expression. In each of the following functions, x is a list of Int values, and the type of the returned value is also a list of Int.

Type family applications in Haskell must be fully saturated. This means that all type-level functions have to be first-order, leading to code that is both messy and longwinded. In this paper we detail ...

Linear type systems have a long and storied history, but not a clear path forward to integrate with existing languages such as OCaml or Haskell. In this paper, we study a linear type system designed ...

Pure Functions¶. An important idea in Haskell is the notion of a pure function. In Haskell, a function is said to be pure if it satisfies these two properties: It always returns the same result for ...