The gleam/list standard library module contains functions for working with lists. A Gleam program will likely make heavy use of this module.

map makes a new list by running a function on each element in a list.

filter makes a new list containing only the elements for which a function returns true.

fold combines all the elements in a list into a single value by running a function left-to-right on each element, passing the result of the previous call to the next call.

It's worth getting familiar with all the functions in this module when writing Gleam code.