Expresso

Overview:

Expresso is a minimal statically-typed functional programming language designed for embedding and extensibility. Its features include a small implementation, static typing with type inference, extensible records and variants, lazy evaluation, and compatibility with Haskell.

Features:

• Small and simple implementation
• Statically typed with type inference
• Structural typing with extensible records and variants
• Lazy evaluation
• Convenient use from Haskell
• Whitespace insensitive syntax
• Type annotations for supporting first-class modules and schema validation
• Built-in support for various data types like ints, doubles, bools, chars, and lists
• Support for fixed-points without recursive records

Summary:

Expresso is a minimal functional programming language with a focus on embedding and extensibility. With features like extensible records, lazy evaluation, and compatibility with Haskell, it offers a simple yet powerful tool for various use cases such as configuration management and data exchange. The language employs a clear syntax and type system, making it ideal for developers looking for a lightweight yet expressive language for their projects.