CUE Tutorial

About this tutorial

This tutorial teaches the fundamentals of CUE. To try out the examples in the tutorial you can follow the installation instructions to get a working setup of CUE.

Use the cue eval or cue export commands to evaluate an example.

Click here to start

TOC

• JSON Sugar and other Goodness
  • Quotes are Optional for Field Names
  • Commas are Optional after Fields
  • Commas are Still Required in Lists
  • Curly Braces
  • Folding of Single-Field Structs
  • Folding all Fields
  • Comments
  • Number Literals
  • String Literals
  • “Raw” Strings
  • Bytes
• References and Visibility
  • References and Scopes
  • Accessing Fields
  • Aliases
  • Emit Values
  • Hidden Values
• Types and are Values
  • Duplicate Fields
  • Bottom / Error
  • Basic Types
  • Order is Irrelevant
  • Disjunctions
  • Default Values
  • Disjunctions of Structs
  • Numbers
  • Ranges
  • Predefined Ranges
  • Lists
  • Templates
• Modules, Packages, and Instances
  • Packages
  • Imports
• Expressions
  • Operators
  • Interpolation
  • Interpolation of Field Names
  • List Comprehensions
  • Field Comprehensions
  • Conditional Fields
  • Null or Error coalescing
• Cycles
  • Reference Cycles
  • Cycles in Fields