add rbs type

[4geru]

Backglond

There are several benefits to using RBS for introducing types into Ruby projects. Firstly, it helps to improve code readability and maintainability, as type signatures make it easier to understand the input and output types of functions and methods. Additionally, RBS can help catch type errors during the development process, reducing the likelihood of runtime errors and improving overall code quality.

Furthermore, RBS allows for better tooling support, as editors and IDEs can use type information to provide autocompletion, type hints, and other helpful features. This can improve developer productivity and reduce the time required for debugging and testing.

Finally, using RBS can help facilitate interoperability between different Ruby projects and libraries, as well as with other programming languages that support typed interfaces. This can make it easier to build and maintain complex software systems with Ruby at their core.

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