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# Description Both `Block` and `Pipeline` had `Index`/`IndexMut` implementations to access their elements, that are currently unused. Explicit helpers or iteration would generally be preferred anyways but in the current state the inner containers are `pub` and are liberally used. (Sometimes with potentially panicking indexing or also iteration) As it is potentially unclear what the meaning of the element from a block or pipeline queried by a usize is, let's remove it entirely until we come up with a better API. # User-Facing Changes None Plugin authors shouldn't dig into AST internals
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.