Flexible Metaprogramming with Rhombus

5 hours ago

Rhombus is a new programming language combining Racket's metaprogramming with Python-like syntax.
It uses indentation-based syntax with ':' for blocks and '|' for branch separation, similar to Python.
Rhombus supports immutable data structures by default, using tree-based lists for efficient operations.
The language features advanced for loops with reducers (e.g., math.product) for concise code.
Macros in Rhombus use syntax objects with metadata for error handling and hygienic/non-hygienic options.
It allows user-defined grammatical contexts and extensions, supporting language-oriented programming.
Rhombus includes gradual typing with annotations for error messages and performance optimization.
The language is backed by the Racket project, licensed under MIT/Apache 2.0, and suitable for academic and professional use.

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