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Ruby constants

Ruby reference for ruby constants.

Syntax

MAX_RETRIES = 3
puts MAX_RETRIES

Examples

Ruby constants example

A focused example you can adapt while practising.

MAX_RETRIES = 3
puts MAX_RETRIES

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

Related Ruby documentation

Ruby modules
Ruby reference for ruby modules.Ruby include
Ruby reference for ruby include.Ruby require
Ruby reference for ruby require.Ruby File.read
Ruby reference for ruby file.read.