July 23, 2023

Simplifying Recursion with Elixir's Stream Module

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Simplifying Recursion with Elixir's Stream Module

Source: programmersstone.blog

The author, known as JEG2, reviews the challenges of traditional recursion in Elixir and provides an alternative solution using the Stream module. By using the Fibonacci sequence as an example, JEG2 highlights the common issues faced when using recursion: managing the business logic, checking for stopping conditions, and generating the desired outcome all at the same time, which can result in a significant cognitive load. JEG2 then introduces the Stream.iterate/2 function, an alternative that allows for infinite sequence generation and better flow control during iteration. This reduces the mental overhead as it separates concerns more effectively. By using Stream and Enum functions, JEG2 shows how to build a more flexible and comprehensible approach to generating sequential data, which not only simplifies the Fibonacci sequence solution but is also applicable to a wide range of other scenarios in Elixir programming.

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