nushell/crates/nu-std
2024-05-28 12:04:09 -07:00
..
src Revert "Remove std::env::set_current_dir() call from EngineState::merge_env()" (#12954) 2024-05-24 11:09:59 -05:00
std fix std help (#12943) 2024-05-23 08:51:02 -05:00
tests fix std help (#12943) 2024-05-23 08:51:02 -05:00
Cargo.toml Bump version to 0.94.0 (#12987) 2024-05-28 12:04:09 -07:00
CONTRIBUTING.md Minimize future false positive typos (#12751) 2024-05-04 15:00:44 +00:00
LICENSE add LICENSE to nu-std (#8803) 2023-04-07 13:39:21 -07:00
README.md fix nu-std README (#11244) 2023-12-06 16:26:02 +01:00
testing.nu Update PR template (#12838) 2024-05-13 08:45:44 -05:00

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 usage | where name =~ "std "
#┬───────────name────────────┬──────────────────────usage──────────────────────
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