Learning Rego
Learn and write Rego with these tools from the OPA Ecosystem.
Regal
Regal can automatically check for common Rego mistakes as you code. Each violation is accompanied by a detailed explanation which can be a great learning tool for new Rego users. See the Supported Rules.
OPA Playground
Sometimes if you're working on a Rego policy in an integrated system it can help to debug it in isolation first. The playground is a great place to do that. Get started with a hello world example.
Rego Cheat Sheet
The Rego Cheat Sheet was designed as a language reference, featuring common contact points, with Rego learners in mind.
Styra Academy
'OPA Policy Authoring' is a free course that teaches the fundamentals of writing Rego policies.
Alfred
Similar to the public OPA Playground, Alfred can be used to learn Rego interactively in an environment that can't use the public playground. Read about installation.
Awesome OPA List
The Awesome OPA project maintains a list of policy packages, and editor integrations which can be helpful references for learning Rego.
Express OR in Rego
This learning material is a great way to learn how to migrate logic from other languages to Rego.
Rego Language Comparisons
The Rego Language Comparisons guide provides a series of examples illustrating how a policy can be expressed in a given language and the corresponding Rego code for comparison. Java, Python, and Go are currently covered.