S7 is an R package that implements a new object-oriented programming system intended to succeed S3 and S4. Developed by the R Consortium OOP Working Group, it provides formal class definitions via `new_class()`, a property system with type checking and validation, generic functions with multiple dispatch, method registration, and comprehensive compatibility with S3 and S4. The package includes a C extension for performance-critical dispatch and property access. The architecture is a standard R package with exported API functions, internal helper modules, and extensive test coverage. It is consumed as a dependency by several other packages and is designed to eventually be incorporated into base R. There are no data analysis or research-specific components; the entire repository focuses on language infrastructure for object-oriented programming.
Vim-R is a Vim plugin that transforms Vim into a full-featured integrated development environment for the R language. It provides interactive R console integration (via built-in terminal or external tmux), omni-completion for R objects and function arguments, an object browser, PDF preview with SyncTeX forward/backward search, and support for R Markdown, Rnoweb, and Quarto documents. The plugin communicates with R through a custom TCP/IP server (vimrserver) written in C and a companion R package (vimcom). While the plugin is superseded by R.nvim for Neovim users, the codebase demonstrates high craftsmanship in its multi-language architecture (VimL, C, R, Python) and remains functional for Vim users. It is not a data analysis tool but an editor enhancement for R development.