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0918050ac8
# Description The name of the `group` command is a little unclear/ambiguous. Everything I look at it, I think of `group-by`. I think `chunks` more clearly conveys what the `group` command does. Namely, it divides the input list into chunks of a certain size. For example, [`slice::chunks`](https://doc.rust-lang.org/std/primitive.slice.html#method.chunks) has the same name. So, this PR adds a new `chunks` command to replace the now deprecated `group` command. The `chunks` command is a refactored version of `group`. As such, there is a small performance improvement: ```nushell # $data is a very large list > bench { $data | chunks 2 } --rounds 30 | get mean 474ms 921µs 190ns # deprecation warning was disabled here for fairness > bench { $data | group 2 } --rounds 30 | get mean 592ms 702µs 440ns > bench { $data | chunks 200 } --rounds 30 | get mean 374ms 188µs 318ns > bench { $data | group 200 } --rounds 30 | get mean 481ms 264µs 869ns > bench { $data | chunks 1 } --rounds 30 | get mean 642ms 574µs 42ns > bench { $data | group 1 } --rounds 30 | get mean 981ms 602µs 513ns ``` # User-Facing Changes - `group` command has been deprecated in favor of new `chunks` command. - `chunks` errors when given a chunk size of `0` whereas `group` returns chunks with one element. # Tests + Formatting Added tests for `chunks`, since `group` did not have any tests. # After Submitting Update book if necessary.
134 lines
1.6 KiB
Rust
134 lines
1.6 KiB
Rust
mod alias;
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mod all;
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mod any;
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mod append;
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mod assignment;
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mod break_;
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mod bytes;
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mod cal;
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mod cd;
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mod chunks;
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mod compact;
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mod complete;
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mod config_env_default;
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mod config_nu_default;
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mod continue_;
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mod conversions;
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#[cfg(feature = "sqlite")]
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mod database;
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mod date;
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mod debug_info;
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mod def;
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mod default;
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mod detect_columns;
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mod do_;
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mod drop;
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mod du;
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mod each;
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mod echo;
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mod empty;
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mod error_make;
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mod every;
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mod exec;
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mod export_def;
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mod fill;
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mod filter;
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mod find;
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mod first;
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mod flatten;
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mod for_;
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mod format;
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mod generate;
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mod get;
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mod glob;
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mod griddle;
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mod group_by;
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mod hash_;
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mod headers;
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mod help;
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mod histogram;
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mod ignore;
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mod insert;
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mod inspect;
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mod interleave;
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mod into_datetime;
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mod into_filesize;
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mod into_int;
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mod join;
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mod last;
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mod length;
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mod let_;
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mod lines;
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mod loop_;
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mod ls;
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mod match_;
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mod math;
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mod merge;
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mod mktemp;
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mod move_;
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mod mut_;
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mod network;
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mod nu_check;
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mod open;
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mod par_each;
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mod parse;
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mod path;
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mod platform;
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mod prepend;
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mod print;
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#[cfg(feature = "sqlite")]
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mod query;
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mod random;
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mod range;
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mod redirection;
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mod reduce;
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mod reject;
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mod rename;
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mod return_;
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mod reverse;
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mod rm;
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mod roll;
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mod rotate;
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mod run_external;
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mod save;
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mod select;
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mod semicolon;
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mod seq;
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mod seq_char;
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mod seq_date;
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mod skip;
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mod sort;
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mod sort_by;
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mod source_env;
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mod split_by;
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mod split_column;
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mod split_row;
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mod str_;
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mod table;
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mod take;
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mod tee;
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mod terminal;
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mod to_text;
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mod touch;
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mod transpose;
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mod try_;
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mod ucp;
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#[cfg(unix)]
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mod ulimit;
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mod debug;
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mod umkdir;
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mod uname;
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mod uniq;
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mod uniq_by;
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mod update;
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mod upsert;
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mod url;
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mod use_;
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mod where_;
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mod which;
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mod while_;
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mod with_env;
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mod wrap;
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mod zip;
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