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Reilly Wood 6a274b860a
Cell paths: make optional path members short-circuit (#8554) 
This is a follow-up to https://github.com/nushell/nushell/pull/8379 and
https://github.com/nushell/nushell/discussions/8502.

This PR makes it so that the new `?` syntax for marking a path member as
optional short-circuits, as voted on in the
[8502](https://github.com/nushell/nushell/discussions/8502) poll.
Previously, `{ foo: 123 }.bar?.baz` would raise an error:

```
> { foo: 123 }.bar?.baz
  × Data cannot be accessed with a cell path
   ╭─[entry #15:1:1]
 1 │ { foo: 123 }.bar?.baz
   ·                   ─┬─
   ·                    ╰── nothing doesn't support cell paths
   ╰────
   ```

Here's what was happening:

1. The `bar?` path member access returns `nothing` because there is no field named `bar` on the record
2. The `baz` path member access fails when trying to access a `baz` field on that `nothing` value

After this change, `{ foo: 123 }.bar?.baz` returns `nothing`; the failed `bar?` access immediately returns `nothing` and the `baz` access never runs.
2023-03-23 09:54:19 +13:00
..
nu_plugin_custom_values bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu_plugin_example bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu_plugin_formats bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu_plugin_gstat bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu_plugin_inc bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu_plugin_python update nu_plugin_python due to signature changes (#8107) 2023-02-18 13:27:24 +00:00
nu_plugin_query bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-cli fix: set repl_buffer_state to the REPL buffer after the `pre_execut… (#8560) 2023-03-22 06:43:25 -05:00
nu-cmd-lang Switch let/let-env family to init with math expressions (#8545) 2023-03-23 09:14:10 +13:00
nu-color-config bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-command Switch let/let-env family to init with math expressions (#8545) 2023-03-23 09:14:10 +13:00
nu-engine Switch let/let-env family to init with math expressions (#8545) 2023-03-23 09:14:10 +13:00
nu-explore bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-glob bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-json bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-parser Switch let/let-env family to init with math expressions (#8545) 2023-03-23 09:14:10 +13:00
nu-path bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-plugin bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-pretty-hex bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-protocol Cell paths: make optional path members short-circuit (#8554) 2023-03-23 09:54:19 +13:00
nu-system bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-table bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-term-grid bump to 0.77.2 (#8496) 2023-03-17 21:29:15 +13:00
nu-test-support Remove once_cell dependency from nu-test-support create. (#8568) 2023-03-22 19:36:52 +01:00
nu-utils FIX: expand all the base_paths in std::test_dirs (#8552) 2023-03-22 09:50:01 +01:00
README.md Remove old nushell/merge engine-q 2022-02-07 14:54:06 -05:00

README.md

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.