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Ian Manske 9996e4a1f8
Shrink the size of Expr (#12610) 
# Description
Continuing from #12568, this PR further reduces the size of `Expr` from
64 to 40 bytes. It also reduces `Expression` from 128 to 96 bytes and
`Type` from 32 to 24 bytes.

This was accomplished by:
- for `Expr` with multiple fields (e.g., `Expr::Thing(A, B, C)`),
merging the fields into new AST struct types and then boxing this struct
(e.g. `Expr::Thing(Box<ABC>)`).
- replacing `Vec<T>` with `Box<[T]>` in multiple places. `Expr`s and
`Expression`s should rarely be mutated, if at all, so this optimization
makes sense.

By reducing the size of these types, I didn't notice a large performance
improvement (at least compared to #12568). But this PR does reduce the
memory usage of nushell. My config is somewhat light so I only noticed a
difference of 1.4MiB (38.9MiB vs 37.5MiB).

---------

Co-authored-by: Stefan Holderbach <sholderbach@users.noreply.github.com>
2024-04-24 15:46:35 +00:00
..
assets REFACTOR: move the 0% commands to nu-cmd-extra (#9404) 2023-07-06 08:31:31 -07:00
src Shrink the size of Expr (#12610) 2024-04-24 15:46:35 +00:00
tests Remove feat extra and include in default (#12140) 2024-03-10 17:29:02 +01:00
Cargo.toml Bump version to 0.92.3 (#12476) 2024-04-12 08:00:43 -05:00
LICENSE nu-cmd-extra crate infrastructure in place with the Bits command as the model for adding other commands (#9327) 2023-06-01 10:46:16 -07:00
README.md Remove feat extra and include in default (#12140) 2024-03-10 17:29:02 +01:00

README.md

nu-cmd-extra

The commands in this crate are the extra commands of Nushell. These commands are not in a state to be guaranteed to be part of the 1.0 API; meaning that there is no guarantee longer term that these commands will be around into the future.

For a while we did exclude them behind the --features extra compile time flag, meaning that the default release did not contain them. As we (the Nushell team) shipped a full build including both extra and dataframe for some time, we chose to sunset the extra feature but keep the commands in this crate for now. In the future the commands may be moved to more topical crates or discarded into plugins.