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# Description This does a few speedups for tight loops: * Caches the DeclId for `table` so we don't look it up. This means users can't easily replace the default one, we might want to talk about this tradeoff. The lookup for finding `table` in a tight loop is currently pretty heavy. Might be another way to speed this up. * `table` no longer pre-calculates the width. Instead, it only calculates the width when printing a table or record. * Use more efficient way of collecting the block of each loop * When printing output, only get the config when needed Combined, this drops the runtime from a million loop tight iteration from 1sec 8ms to 236ms. # 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 -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass > **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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