Ruby reduce

Syntax

sum = [1, 2, 3].reduce(0) { |total, n| total + n }

Examples

sum = [1, 2, 3].reduce(0) { |total, n| total + n }

Best practices

• Start with the smallest working example, then adapt it to your project.
• Use the language’s standard library and idioms before introducing extra dependencies.

At a glance

Purpose

Expressive scripting and applications

File extension

.rb

Runs in

Ruby interpreter

Usually used with

Ruby standard library and gems

Specifications & further reading

• Ruby documentation

Related Ruby documentation