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# Description Following #15843, I have tinkered more with it and realized that there are plenty of features from [hyperfine](https://github.com/sharkdp/hyperfine) that could be implemented pretty easily. - `--warmup` flag to do `n` runs without benchmarking first, useful to fill disk cache ```nu @example "use --warmup to fill the disk cache before benchmarking" { bench { fd } { jwalk . -k } -w 1 -n 10 } ``` - `--setup`, `--prepare`, `--cleanup`, `--conclude` flags to run code before/after benchmarks ```nu @example "use `--setup` to compile before benchmarking" { bench { ./target/release/foo } --setup { cargo build --release } } @example "use `--prepare` to benchmark rust compilation speed" { bench { cargo build --release } --prepare { cargo clean } } ``` - `--ignore-errors` to ignore any errors in the benchmarked commands - benchmarked commands are now `| ignore` so that externals don't fill the screen
Welcome to the standard library of `nushell`!
The standard library is a pure-nushell collection of custom commands which
provide interactive utilities and building blocks for users writing casual scripts or complex applications.
To see what's here:
> use std
> scope commands | select name description | where name =~ "std "
#┬───────────name────────────┬───────────────────description───────────────────
0│std assert │Universal assert command
1│std assert equal │Assert $left == $right
2│std assert error │Assert that executing the code generates an error
3│std assert greater │Assert $left > $right
4│std assert greater or equal│Assert $left >= $right
... ...
─┴───────────────────────────┴─────────────────────────────────────────────────
🧰 Using the standard library in the REPL or in scripts
All commands in the standard library must be "imported" into the running environment
(the interactive read-execute-print-loop (REPL) or a .nu script) using the
use command.
You can choose to import the whole module, but then must refer to individual commands with a std prefix, e.g:
use std
std log debug "Running now"
std assert (1 == 2)
Or you can enumerate the specific commands you want to import and invoke them without the std prefix.
use std ["log debug" assert]
log debug "Running again"
assert (2 == 1)
This is probably the form of import you'll want to add to your env.nu for interactive use.
✏️ contribute to the standard library
You're invited to contribute to the standard library! See CONTRIBUTING.md for details