delameter

Unicode sub- and superscripts

\	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F	examples
U+00Bx U+207x U+208x U+209x	⁰ ₀ ₐ	ⁱ ₁ ₑ	² ₂ ₒ	³ ₃ ₓ	⁴ ₄ ₔ	⁵ ₅ ₕ	⁶ ₆ ₖ	⁷ ₇ ₗ	⁸ ₈ ₘ	¹ ⁹ ₉ ₙ	⁺ ₊ ₚ	⁻ ₋ ₛ	⁼ ₌ ₜ	⁽ ₍	⁾ ₎	ⁿ	7s² 5f³ 6d¹ x⁽⁷ⁿ⁺ⁱ⁾ H₂SO₄ ⁿCᵣ = ⁿPᵣ/r!

rollwagen

lsof / netstat on macos

lsof - list open files

• display (list) all open TCP+UDP ports and grep for listening ones
  • sudo lsof -i -P | grep LISTEN

    COMMAND     PID           USER   FD   TYPE             DEVICE SIZE/OFF   NODE NAME
    launchd       1           root   11u  IPv6 0x26dd73cb700390df      0t0    TCP *:22 (LISTEN)
    ....

carlssonk

Deploy Node.js Application to DigitalOcean

This step by step tutorial will show you how to set up a Node.js server with MongoDB to DigitalOcean using PM2, NGINX as reverse proxy and a SSL from LetsEncrypt. We will also add a custom domain name.

Prerequisites

• Download PuTTY & PuTTYgen
• Download WinSCP
• Have your application on a GitHub repo.

Create Droplet & Generate SSH Key

karlhillx

macOS Big Sur 11.0 Setup: Homebrew + Apache + PHP + MariaDB

This document helps get your macOS development environment up and running with the latest versions of Homebrew, Apache, PHP, and MariaDB.

mlent

<ul>
  <li>
    <a href="https://twitter.com/share?text=TITLE OF YOUR POST via @YOUR_USERNAME&url=HTTPS://YOUR_WEBSITE.COM" onclick="window.open(this.href, 'twitter-share', 'width=550,height=235'); return false;">
      Share on Twitter
    </a>
  </li>
  <li>
    <a href="https://news.ycombinator.com/submitlink?u=HTTP://YOUR_URL.COM&t=YOUR CONTENT" onclick="window.open(this.href, 'hn-share', 'width=550,height=350'); return false;">
      Share on Hacker News
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jagdeepsingh

Set up macOS Catalina 10.15

Contents:

• 1 git
• 2 Homebrew
• 3 rbenv
• 4 ruby
• 5 bundler
• 6 Atom

oseme-techguy

#!/usr/bin/env bash

# To fix the " gpg: WARNING: unsafe permissions on homedir '/home/path/to/user/.gnupg' " error
# Make sure that the .gnupg directory and its contents is accessibile by your user.
chown -R $(whoami) ~/.gnupg/

# Also correct the permissions and access rights on the directory
chmod 600 ~/.gnupg/*
chmod 700 ~/.gnupg

apolopena

// NOTE: time string must look like this 07:05:45PM or this 07:05:45AM and account for 12:00:00AM and convert 12:00:00pm to 12:00:00
function timeConversion(s) {
    const ampm = s.slice(-2);
    const hours = Number(s.slice(0, 2));
    let time = s.slice(0, -2);
    if (ampm === 'AM') {
        if (hours === 12) { // 12am edge-case
            return  time.replace(s.slice(0, 2), '00');
        }
        return time;

MuhsinFatih

I am assuming you are here because like me, you installed a bazillion different python interpreters on mac and the whole thing is a spagetti. Today, I finally fixed my python installation. Whatever I install for python2 or python3 using pip JUST.WORKS.. My god! finally.

What the hell?

Here is what I had messed up, which you also probably did:

• I had too many different python interpreters
• Too many different symlinks which I lost track of
• almost no package I installed with pip worked without a headache
• any attempt to fix using online resources made it worse.

rauschma

This content moved here: https://exploringjs.com/impatient-js/ch_arrays.html#quickref-arrays