Implementing Permission Modeling in Gleam: A Compile-Time Approach
Modelling Permissions in Gleam | kurz.net 🔗
The article explores how to implement permission modeling in the Gleam programming language, inspired by a TypeScript example. It highlights the importance of enforcing permissions at compile time rather than runtime to avoid potential errors in applications. The author demonstrates how to use phantom types to ensure that users are tagged correctly based on their permissions, thereby preventing unauthorized access to certain components. The piece concludes with reflections on the challenges of working with types in Gleam and encourages developers to write more in this language.
- Gleam is a statically typed language that compiles to JavaScript and Erlang.
- The article emphasizes the need to enforce permissions at compile time to catch errors early.
- Phantom types are used to tag users with their permissions, improving type safety in the application.
What is the main focus of the article?
The article focuses on modeling permissions in the Gleam programming language, using a TypeScript example to illustrate how to enforce permission checks at compile time.
Why is enforcing permissions at compile time important?
Enforcing permissions at compile time helps to prevent errors that could occur at runtime, ensuring that unauthorized access to application components is avoided.
What are phantom types used for in Gleam?
Phantom types in Gleam are used to tag users with their permission levels, helping to enforce type safety and prevent unauthorized actions in the application.