We introduce it here and allow it to work with regular lists (tables with no columns) as well as symmetric tables. Say we have two lists and wish to zip them, like so:
```
[0 2 4 6 8] | zip {
[1 3 5 7 9]
} | flatten
───┬───
0 │ 0
1 │ 1
2 │ 2
3 │ 3
4 │ 4
5 │ 5
6 │ 6
7 │ 7
8 │ 8
9 │ 9
───┴───
```
In the case for two tables instead:
```
[[symbol]; ['('] ['['] ['{']] | zip {
[[symbol]; [')'] [']'] ['}']]
} | each {
get symbol | $'($in.0)nushell($in.1)'
}
───┬───────────
0 │ (nushell)
1 │ [nushell]
2 │ {nushell}
───┴───────────
```
We very well support `nth 0 2 3 --skip 1 4` to select particular rows and skip some using a flag. However, in practice we deal with tables (whether they come from parsing or loading files and whatnot) where we don't know the size of the table up front (and everytime we have these, they may have different sizes). There are also other use cases when we use intermediate tables during processing and wish to always drop certain rows and **keep the rest**.
Usage:
```
... | drop nth 0
... | drop nth 3 8
```
The nu-serde crate allows us to become much more generic with respect to how we
convert output to `nu-protocol::Value`s. This allows us to remove a lot of the
special-case code that we wrote for deserializing JSON values.
Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>
* Refactor Hash code to simplify md5 and sha256 implementations
Md5 and Sha256 (and other future digests) require less boilerplate code
now. Error reporting includues the name of the hash again.
* Add missing hash sha256 test
Select used to ignore absent values resulting in "squashing" where
columns for multiple rows could be squashed into a single row.
This fixes the problem by inserting null/nothing into absent value, thus
preserving the structure of rows. This makes sure that all selected
columns are present in each row.
* nuframe in its own type in UntaggedValue
* Removed eager dataframe from enum
* Dataframe created from list of values
* Corrected order in dataframe columns
* Returned tag from stream collection
* Removed series from dataframe commands
* Arithmetic operators
* forced push
* forced push
* Replace all command
* String commands
* appending operations with dfs
* Testing suite for dataframes
* Unit test for dataframe commands
* improved equality for dataframes
* moving all dataframe operations to protocol
Hashers now uses on Rust Crypto Digest trait which makes it trivial to
implement additional hash functions.
The original `md5` crate does not implement the Digest trait and was
replaced by `md-5` crate which does. Sha256 uses already included `sha2`
crate.
* nuframe in its own type in UntaggedValue
* Removed eager dataframe from enum
* Dataframe created from list of values
* Corrected order in dataframe columns
* Returned tag from stream collection
* Removed series from dataframe commands
* Arithmetic operators
* forced push
* forced push
* Replace all command
* String commands
* appending operations with dfs
* Testing suite for dataframes
* Unit test for dataframe commands
* improved equality for dataframes
* Read from standard input in `rm`
With this change, rm falls back to reading from the standard input if no
arguments are supplied. This leads to more intuitive pipes as seen in
https://github.com/nushell/nushell/issues/2824
ls | get name | sort-by | first 20 | each {rm $it} becomes
ls | get name | sort-by | first 20 | rm
* [Fix] Run cargo fmt, make files a rest parameter, and fix cargo build warnings
* [Fix] Fix clippy suggestions
* Fix swapped PATH env var separators
* Support pathvar to manipulate other vars than PATH
* Add tests for pathvar and its subcommands
* Adjust pathvar tests to comply with env quirks
* Make pathvar tests work on non-Windows as well
* Compact the comments in pathvar tests
* Fix last failing test
Co-authored-by: Jakub Žádník <jakub.zadnik@tuni.fi>
This allows converting strings to filepaths without having to use
`path expand` roundtrip.
Filepaths are taken as-is without any validation/conversion.
* Fix swapped PATH env var separators
* Support pathvar to manipulate other vars than PATH
* Add tests for pathvar and its subcommands
* Fix PATH env name for Windows
Seems like Windows uses PATH as well.
Co-authored-by: Jakub Žádník <jakub.zadnik@tuni.fi>
* kind of works but not what we really want
* updated `into binary` and `first` to work better together
* attempt to fix wasm build problem
* attempt #2 to fix wasm stuff
Nothing used the `ptree` feature or optional dependency within
`nu-command` except to include it within the `version` output. This
may be related to when `nu-cli` also had a `ptree` feature, but
I'm not sure.
That leaves the code within `nu_plugin_tree` as the sole remaining
user of `ptree`, which is already covered by the feature `tree`
and included in the `version` output.
* Type in command description
* filter name change
* Clean column name
* Clippy error and updated polars version
* Lint correction in file
* CSV Infer schema optional
* Correct float operations
* changes in series castings to allow other types
* Clippy error correction
* Removed lists from command signatures
* Added not command for series
* take command with args
* set with idx command
* Type in command description
* filter name change
* Clean column name
* Clippy error and updated polars version
* Lint correction in file
* CSV Infer schema optional
* Correct float operations
* changes in series castings to allow other types
* Clippy error correction
* Removed lists from command signatures
* Added not command for series
