Tim Martin t-mart

I used to have a site bookmarked with a table of all these functions, but the link is dead. Here's a matrix of Option and Result conversion functions. These become second nature once you have used Rust for any significant length of time, but it's useful to have a table reference.

For each of the below:

T is the value possibly contained in an input Ok Result or Some Option.
U is a new value created by transforming or replacing an input T. Note that when U appears in methods like map, U ?= T, for example by calling

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

Use ESM yourself. (preferred)
Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
Stay on the existing version of the package until you can move to ESM.

Unofficial Bash Strict Mode

Sometimes a programming language has a "strict mode" to restrict unsafe constructs. E.g., Perl has use strict, Javascript has "use strict", and Visual Basic has Option Strict. But what about bash? Well, bash doesn't have a strict mode as such, but it does have an unofficial strict mode:

set -euo pipefail

set -e

Concise Unicode character names in JavaScript

J. S. Choi, 2022

⚠️ Warning: This article is not finished. The code will not yet run without errors.

All programmers must manipulate text; JavaScript programmers are no exception. Text manipulation often refers to specific characters, usually by their code points in hexadecimal – or by embedding the characters directly in source code.

Get/set ID3 meta tags using ffmpeg

A quick guide on how to read/write/modify ID3 metadata tags for audio / media files using ffmpeg.

FFmpeg has a free-form command line option that allows the user to specify key-value-pairs for encoding metadata. Let's take a look.

1. Read ID3 metadata

To list all global metadata tags for a media file, just set an input but no output file.

Grab ffmpeg from https://www.ffmpeg.org/download.html

It's a command line tool which means you will have to type things with your keyboard instead of clicking on buttons.

The most trivial operation would be converting gifs:

ffmpeg -i your_gif.gif -c:v libvpx -crf 12 -b:v 500K output.webm

-crf values can go from 4 to 63. Lower values mean better quality.
-b:v is the maximum allowed bitrate. Higher means better quality.

	{
	"schemes" :
	[
	{
	"background" : "#fafafa",
	"black" : "#000000",
	"blue" : "#3199e1",
	"brightBlack" : "#686868",
	"brightBlue" : "#399ee6",
	"brightCyan" : "#4cbf99",

	import asyncio
	import random


	class Hub():

	def __init__(self):
	self.subscriptions = set()

	def publish(self, message):

	[
	{
	"team": "Boston Celtics",
	"name": "Xavier McDaniel",
	"speed": 5,
	"threePoint": 5,
	"dunk": 5,
	"pass": 1,
	"power": 8,
	"steal": 3,

	#!/usr/bin/python

	import sys, os
	from PIL import Image
	import numpy
	import scipy.fftpack

	sourceImage = sys.argv[1]

	image = Image.open(sourceImage)