Darren Schroeder fdncred

Nushell Memory Utilization

2023-08-29 07:13:21.667983800 -05:00

❯ let before = (sys).mem.used
❯ $before
9,382,694,912
❯ mut csv = open ~\OneDrive\vdi\DBScripts\Output\violations-20220731-20230801.csv
❯ $csv | length
1046339

Key combinations

Hover / Tooltip

Vscode

Just put your cursor over the text, use mouse to scroll text

Neovim

Bashisms

What is a bashism

A bashism is a command, operator, or syntax in the repl that most people associate with bash.

What bashisms does Nushell support?

Bang Bang syntax

Nushell stdin redesign

From Ian on Discord

run interactive repl
  nu

execute commands before interactive repl:
 nu -e "commands"

Config file loading rules

default_config.nu and default_env.nu refer to the files that are compiled inside of the nushell executable and are also located in our repo.
personal env.nu/config.nu/login.nu refer to the files that are in the $nu.default-config-dir that you have personally edited.
specified config.nu/env.nu refer to files that are specified on the command line with the --config and --env-config command line parameters.

nu

✅ Always reads the nushell standard library
✅ Always reads personal plugin.msgpackz file if it exists

iTerm2

OSC4 - set foreground/background colors

OSC 4 ; -2; ? ST //bg
OSC 4 ; -1 ; ? ST //fg
OSC 4 ; -2 ; rgb : [red] / [green] / [blue] ST
OSC 4 ; -1 ; rgb : [red] / [green] / [blue] ST

OSC6 - set window title and tab color

OSC 6 ; 1 ; bg ; red ; brightness ; [N] ST
OSC 6 ; 1 ; bg ; green ; brightness ; [N] ST

OSC 6 ; 1 ; bg ; blue ; brightness ; [N] ST

Stor family of commands

Introduction

Originally when I wrote the $db PR, I went in knowing that other commands would be needed. The concept is to have an in-memory sqlite database available to you at any time to store anything you want. I just chose $db because it was very nushell-y and easily accessible.

An alternative that I came up with was to have a command named stor with subcommands. stor without and e because you don't get groceries from it. :) We can name it whatever, but for now, it's stor. The idea behind the stor family of commands is that they provide a way to interact with the in-memory database.

Commands

Recurring Known Bugs that need to be fixed before 1.0

input_output_types order of execution vs matching

The `input_output_types`` are parsed from top to bottom instead of matching on the appropriate ones. This makes some thing fail because the first one succeeds gets output versus the right one.

Example:

❯ http get https://index.crates.io/ba/se/base64 | lines | last | from json
Error: nu::parser::input_type_mismatch

	# emulate the python rich print
	# test case 1: pr "hello world"
	# test case 2: pr "hello world" --style bold
	# test case 3: pr "hello world" --style 'bold underline'
	# test case 4: pr "hello world" --style 'dim italic red'
	def pr [
	msg,
	--style: string,
	] {
	let style = if $style == null {

	# Language support configuration.
	# See the languages documentation: https://docs.helix-editor.com/master/languages.html

	[language-server]

	awk-language-server = { command = "awk-language-server" }
	bash-language-server = { command = "bash-language-server", args = ["start"] }
	bass = { command = "bass", args = ["--lsp"] }
	bicep-langserver = { command = "bicep-langserver" }
	bufls = { command = "bufls", args = ["serve"] }