Jimmy Chu jimmychu0807

General Instructions

Most workshops at Sub0 will require that you have set up your computer to compile Substrate.

You can use this one-liner to do many of these steps for you automatically:

curl https://getsubstrate.io -sSf | bash -s -- --fast

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

The Philosophy:

We believe that the Hong Kong developer community is skilled and diverse, but that often these skills end up hidden away in big organisations.

We aim to provide a forum for local developers to share these skills, and inspire their peers.

With a mixture of local and international speakers, we provide talks which are targeted and relevant.

We believe that conferences don't need to be big and expensive to be valuable.

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

	########################################################################
	# OPTIMAL .htaccess FILE FOR SPEED AND SECURITY @Version 2.0.9 - 03/2024
	# ----------------------------------------------------------------------
	# @Author: Andreas Hecht
	# @Author URI: https://seoagentur-hamburg.com
	# License: GNU General Public License v2 or later
	# License URI: http://www.gnu.org/licenses/gpl-2.0.html
	########################################################################

	http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
	http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

	#payload: [{"kind"=>"person"}]
	Segment.where("payload @> ?", [{kind: "person"}].to_json)

	#data: {"interest"=>["music", "movies", "programming"]}
	Segment.where("data @> ?", {"interest": ["music", "movies", "programming"]}.to_json)
	Segment.where("data #>> '{interest, 1}' = 'movies' ")
	Segment.where("jsonb_array_length(data->'interest') > 1")