A metatable in Lua defines various extraneous behaviors for a table when indexed, modified, interacted with, etc. They are Lua's core metaprogramming feature; most well known for being useful to emulate classes much like an OOP language.
Any table (and userdata) may be assigned a metatable. You can define a metatable for a table as such:
-- Our sample table
local tab = {}
-- Our metatable
local metatable = {
-- This table is then what holds the metamethods or metafields| #!/usr/bin/env python3 | |
| """ | |
| License: MIT License | |
| Copyright (c) 2023 Miel Donkers | |
| Very simple HTTP server in python for logging requests | |
| Usage:: | |
| ./server.py [<port>] | |
| """ | |
| from http.server import BaseHTTPRequestHandler, HTTPServer |
forked from https://gist.github.com/chetan/1827484 which is from early 2012 and contains outdated information.
Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.
Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).
The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int
| # fshow - git commit browser (enter for show, ctrl-d for diff, ` toggles sort) | |
| fshow() { | |
| local out shas sha q k | |
| while out=$( | |
| git log --graph --color=always \ | |
| --format="%C(auto)%h%d %s %C(black)%C(bold)%cr" "$@" | | |
| fzf --ansi --multi --no-sort --reverse --query="$q" \ | |
| --print-query --expect=ctrl-d --toggle-sort=\`); do | |
| q=$(head -1 <<< "$out") | |
| k=$(head -2 <<< "$out" | tail -1) |
| #!/bin/bash | |
| # | |
| # git-mv-with-history -- move/rename file or folder, with history. | |
| # | |
| # Moving a file in git doesn't track history, so the purpose of this | |
| # utility is best explained from the kernel wiki: | |
| # | |
| # Git has a rename command git mv, but that is just for convenience. | |
| # The effect is indistinguishable from removing the file and adding another | |
| # with different name and the same content. |
cribbed from http://pastebin.com/xgzeAmBn
Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.
