Elixir Enum Module

Elixir Enum Module

The Elixir Enum Module is an essential component of the Elixir programming language. It provides a set of functions that allow developers to work with enumerable data structures effectively. This module is part of the Elixir standard library, making it readily available for every Elixir project.

Overview

The Enum module offers a wide range of functions that enable operations on enumerables. Enumerables can include lists, maps, ranges, streams, and more. With the help of these functions, developers can iterate, transform, filter, and perform various other operations on enumerables easily and efficiently.

Commonly Used Functions

• each/2 - Iterates over an enumerable and invokes a given function on each element.
• map/2 - Transforms each element in an enumerable by applying a given function and returns a new enumerable.
• filter/2 - Filters an enumerable by only keeping the elements that satisfy a given condition.
• reduce/3 - Reduces an enumerable to a single value by applying a given function on each element.
• sort/1 - Sorts elements in an enumerable in ascending order.
• reverse/1 - Reverses the order of elements in an enumerable.
• any?/2 - Checks if at least one element in the enumerable satisfies a given condition.
• all?/2 - Checks if all elements in the enumerable satisfy a given condition.

Examples

Example 1: Filtering a List

```elixir fruits = ["apple", "banana", "cherry", "date"] short_fruits = Enum.filter(fruits, fn fruit -> String.length(fruit) < 6 end) ```

Example 2: Mapping over a Range

```elixir numbers = 1..5 squared_numbers = Enum.map(numbers, fn number -> number * number end) ```

Example 3: Reducing a Stream

```elixir stream = Stream.iterate(1, &(&1 + 1)) sum = Enum.reduce(stream, 0, fn number, acc -> number + acc end) ```

Conclusion

The Elixir Enum module is a powerful tool for working with enumerables in the Elixir programming language. Its wide range of functions simplifies common operations and provides flexibility in handling data. By leveraging this module, developers can write concise and expressive code while effectively manipulating enumerables.

For more information about using the Enum module and other vital components of Elixir, refer to the related articles on this wiki.