Darren Schroeder 11977759ce
fix cal input_output_types signature (#7306)
# Description

This is one of many commands that needs the `input_output_types()` part
of the signature filled in so that `$nu.scope.commands` shows the
signature properly which leads to the documentation being updated
properly.

TIL that when commands like `cal` don't have Example tests that can
easily be expressed and require the use of `None` results that we need
to use this as part of the signature.

```rust
.allow_variants_without_examples(true) // TODO: supply exhaustive examples
```

Related to https://github.com/nushell/nushell/issues/7287

# User-Facing Changes



# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
2022-12-01 07:10:49 -06:00
..
2022-11-30 16:06:22 -06:00
2022-02-07 14:54:06 -05:00

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.