Web Development with ReasonML

Manipulating Lists with Belt.List

The Belt.List module defines a large number of functions for processing lists. (Just a note: the Belt.List definitions and examples^[22] are written in OCaml format.) We’ll use the following list for many of the examples:

collections/src/ListExamples.re

let items = [10, 11, 12, 13, 14, 15, 16];

For example, the length function returns the number of elements in the list, so length(items) returns 7. You can use size as a synonym for length.

This section is going to be somewhat of a laundry list of utility functions because it’s difficult to find a specific example that uses all of them. (It’s not an exhaustive list. See the documentation for that.) To make it easier to read, I’ll avoid prefacing each function ...