nushell

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uniq and uniq-by optimization (#7477 ) (#7534 )

# Description

Refactored the quadratic complexity on `uniq` to use a HashMap, as key I
converted the Value to string.
I tried to use the HashableValue, but it looks it is not very developed
yet and it was getting more complex and difficult.

This improves performance on large data sets.

Fixes https://github.com/nushell/nushell/issues/7477


# Tests + Formatting
```
> let data = fetch "https://home.treasury.gov/system/files/276/yield-curve-rates-1990-2021.csv"
> $data | uniq
```

it keeps original attribute order in Records:
```
> [ {b:2, a:1} {a:1, b:2} ] | uniq 
╭───┬───┬───╮
│ # │ b │ a │
├───┼───┼───┤
│ 0 │ 2 │ 1 │
╰───┴───┴───╯
```

2023-01-04 11:35:49 -08:00

command.rs

Add extra_usage messages for subcommand-only commands (#7594 )

2022-12-24 07:16:29 -06:00

csv.rs

Standardise the use of ShellError::UnsupportedInput and ShellError::TypeMismatch and add spans to every instance of the former (#7217 )

2022-12-23 01:48:53 -05:00

delimited.rs

Standardise the use of ShellError::UnsupportedInput and ShellError::TypeMismatch and add spans to every instance of the former (#7217 )

2022-12-23 01:48:53 -05:00

html.rs

to html --list now returns a table (#7080 )