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# Description This pull request provides three new commands: `polars store-ls` - moved from `polars ls`. It provides the list of all object stored in the plugin cache `polars store-rm` - deletes a cached object `polars store-get` - gets an object from the cache. The addition of `polars store-get` required adding a reference_count to cached entries. `polars get` is the only command that will increment this value. `polars rm` will remove the value despite it's count. Calls to PolarsPlugin::custom_value_dropped will decrement the value. The prefix store- was chosen due to there already being a `polars cache` command. These commands were not made sub-commands as there isn't a way to display help for sub commands in plugins (e.g. `polars store` displaying help) and I felt the store- seemed fine anyways. The output of `polars store-ls` now shows the reference count for each object. # User-Facing Changes polars ls has now moved to polars store-ls --------- Co-authored-by: Jack Wright <jack.wright@disqo.com>
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.