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# Description The math functions `avg`, `max`, `median`, `min`, `product`, `stddev`, `sum` and `variance` all takes a list as input and return a number. <https://github.com/nushell/nushell/blob/main/crates/nu-command/src/math/utils.rs> contains code that makes these functions work for tables (by running the function on each column), but this functionality has not been accessible because the input types are too strict. This PR remedies this. The functions should also work on records, since a record is basically a one-row table. Most of these functions also make sense for durations and file sizes, except `product` of course. There's an implementation issue with `stddev` and `variance` for durations and file sizes, but they could in principle support it. # User-Facing Changes This PR only adds supported types, and doesn't remove any, so there should be no breaking changes.
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.