Higher order functions in Scala allow functions to take other functions as parameters or return them. This concept simplifies tasks like filtering and transforming data. A basic example illustrates generating a list of pseudorandom integers, filtering out negative numbers, applying the square root function to non-negative integers, and sorting the results in descending order. Scala's intuitive syntax makes these operations straightforward, demonstrating the language's efficiency in handling functions as first-class citizens without complex calculus concepts.
A higher order function can take another function as a parameter and may return a function, which simplifies certain programming tasks in Scala.
To create a list of pseudorandom integers, filter out negative values, compute their square roots, and sort them in descending order, chaining functions is used.
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