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# Description This new command `into value` is a command that tries to infer the type of data you have in a table. It converts each cell to a string and then runs a set of regular expressions on that string. This was mostly cobbled together after looking at how polars does similar things. The regular expressions were taken straight form polars and tweaked. ### Before ```nushell ❯ [[col1 col2 col3 col4 col5 col6]; ["1" "two" "3.4" "true" "2023-08-10 14:07:17.922050800 -05:00" "2023-09-19"]] | update col1 {|r| $r.col1 | into int } | update col3 {|r| $r.col3 | into float } | update col4 {|r| $r.col4 | into bool } | update col5 {|r| $r.col5 | into datetime } | update col6 {|r| $r.col6 | into datetime } ╭#┬col1┬col2┬col3┬col4┬───col5────┬───col6────╮ │0│ 1│two │3.40│true│a month ago│8 hours ago│ ╰─┴────┴────┴────┴────┴───────────┴───────────╯ ``` or ```nushell ❯ [[col1 col2 col3 col4 col5 col6]; ["1" "two" "3.4" "true" "2023-08-10 14:07:17.922050800 -05:00" "2023-09-19"]] | into int col1 | into float col3 | into bool col4 | into datetime col5 col6 ╭#┬col1┬col2┬col3┬col4┬───col5────┬───col6────╮ │0│ 1│two │3.40│true│a month ago│8 hours ago│ ╰─┴────┴────┴────┴────┴───────────┴───────────╯ ``` ### After ```nushell ❯ [[col1 col2 col3 col4 col5 col6]; ["1" "two" "3.4" "true" "2023-08-10 14:07:17.922050800 -05:00" "2023-09-19"]] | into value ╭#┬col1┬col2┬col3┬col4┬───col5────┬───col6────╮ │0│ 1│two │3.40│true│a month ago│8 hours ago│ ╰─┴────┴────┴────┴────┴───────────┴───────────╯ ``` It's definitely not perfect. There are ways it will fail because on regular expressions not working on all formats. My hope is that people will pick this up and add more regular expressions and if there are problems with the existing ones, change them. This is meant as a "starter command" with easy entry for newcomers that are looking to chip in and help out. Also, some tests probably need to be added to ensure what we have now doesn't break with updates. # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking 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` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass (on Windows make sure to [enable developer mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging)) - `cargo run -- -c "use std testing; testing run-tests --path crates/nu-std"` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # 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. --> |
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