Crystal vs. Python vs. RubyMine vs. Vyper Comparison Chart

Crystal’s syntax is heavily inspired by Ruby’s, so it feels natural to read and easy to write, and has the added benefit of a lower learning curve for experienced Ruby devs. Crystal is statically type-checked, so any type errors will be caught early by the compiler rather than fail on runtime. Moreover, and to keep the language clean, Crystal has built-in type inference, so most type annotations are unneeded. All types are non-nilable in Crystal, and available variables are represented as a union between the type and nil. As a consequence, the compiler will automatically check for null references in compile time. Crystal’s answer to metaprogramming is a powerful macro system, which ranges from basic templating and AST inspection to types inspection and running arbitrary external programs.

Take advantage of the language specific-aware syntax & error highlighting, code formatting, code completion, and quick documentation. Use smart search to jump to any class, file or symbol, or even any IDE action or tool window. It only takes one click to switch to the declaration, super method, test, usages, implementation, and more. Enjoy super fast navigation in your Rails project with an MVC-based project view and model, class, and gem dependencies diagrams. Follow community best practices with code inspections verifying your code for many types of possible errors and providing on-the-fly improvements with quick-fix options. Automated yet safe refactorings help clean up your code and keep it more maintainable. Rails-aware refactorings help you perform project-wide changes: for example renaming a controller will also rename the helper, views, and tests.