antonga23

Problem

I have two Github accounts: oanhnn (personal) and superman (for work). I want to use both accounts on same computer (without typing password everytime, when doing git push or pull).

Solution

Use ssh keys and define host aliases in ssh config file (each alias for an account).

How to?

1. Generate ssh key pairs for accounts and add them to GitHub accounts.

antonga23

-- First method
SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id

-- Second Method
-- The query above works for special cases where a FULL OUTER JOIN operation would not produce any duplicate rows. 
-- The query above depends on the UNION set operator to remove duplicate rows introduced by the query pattern. 

antonga23

const pause = (data, time) => new Promise(resolve => setTimeout(() => resolve(data), time));
const pauseReject = (data, time) =>
  new Promise((resolve, reject) =>
    setTimeout(() => reject(new Error(`Something went wrong in the ${data} promise`)), time)
  );

const parallelErrorHandlingWrong = () => {
  const firstPromise = pause('first', 3000);
  const secondPromise = pauseReject('second', 2000);
  const thirdPromise = pause('third', 1000);

antonga23

#!/bin/bash
set -euo pipefail

USERNAME=ubuntu # TODO: Customize the sudo non-root username here

# Create user and immediately expire password to force a change on login
useradd --create-home --shell "/bin/bash" --groups sudo "${USERNAME}"
passwd --delete "${USERNAME}"
chage --lastday 0 "${USERNAME}"

antonga23

docker exec -it superset_app /bin/bash

superset fab reset-password --username admin --password yourpassword

antonga23

Mysqldump from Docker container

docker exec -i mysql_container mysqldump -uroot -proot --databases database_name --skip-comments > /path/to/my/dump.sql

OBS

• This will generate a dump.sql file in your host machine. Awesome, eh?
• Avoid using --compact on your dump. This will make MySQL check your constraints which will cause troubles when reading your file (damm you MySQL). And don't use --force to fix this scenario: recreate your dump without --compact ¯_(ツ)_/¯

antonga23

1. Generate keys for github accounts

eg.

ssh-keygen -t ed25519 -C "your_email@example.com"

ssh-keygen -t ed25519 -C "your_email2@website2.com"

2. Start ssh-agent in background and add keys

antonga23

"""
Checking for put-call parity mispricings in facebook.

fb is American, so put call parity doesn't actually apply, but
this is a short term option, with no dividends between now and the
expiration (apr 17, 1 week option), in a low interest rate environment
so you can expect the trees to act almost european.

easier to find this data on yahoo than actual european data and
everyone knows what facebook is so i went with it.

antonga23

<?php 
	function hexToStr($hex){
    		$string='';
    		for ($i=0; $i < strlen($hex)-1; $i+=2){
        	$string .= chr(hexdec($hex[$i].$hex[$i+1]));
    		}
    		return $string;
	}
	
	function getCoinId($parent_coin_info,$puzzle_hash,$amount){

antonga23

#!/bin/bash
# Sometimes you need to move your existing git repository
# to a new remote repository (/new remote origin).
# Here are a simple and quick steps that does exactly this.
#
# Let's assume we call "old repo" the repository you wish
# to move, and "new repo" the one you wish to move to.
#
### Step 1. Make sure you have a local copy of all "old repo"
### branches and tags.