My blog of Technology, Javascript, CSS, Databases, Mongo, Docker, TDD, Blockchain, Data structures, and anything else I'm into

These are just some notes I made when I was using Hyperledger. Definitions Peer A peer is a single 'entity' in the network. It is a machine that shares a portion of their

I{['nternationalisatio'].length}n or I18n or 'Internationalisation'. Look no 'zee'; we're British. First, install 'react-intl'. import { IntlProvider, FormattedMessage, addLocaleData } from 'react-intl' import App from '../App' import en from 'react-intl/locale-data/en'

REST is an acronym for 'Representational State Transfer'. Yo, Represent. This meaning 'depict' or 'stand for'. State, as in the condition of the thing represented. And transfer meaning to pass from one point

Just one of the many little annoyances that interrupt the flow. Kind of like setting up https and renewing certs. Anyhoo, Mac lets you tweak the quality of audio output over bluetooth. The

There are a few ways to back up data in mongo. For now I just want to use mongodump. I decided to create a shell script with something similar to: docker exec mydatabase

socket - one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application

'Aaahh be like water', Bruce Lee said, 'be like water'. Streams flow and you manage them with piping, just like plumbing. source.pipe(destination) So to take input from the terminal (stdin), and

Testing is essential to development. I've obviously used testing libraries such as Mocha, Chai, Ava, Tape, etc. But how would you go about writing one yourself? How would you build a test framework

I couldn't find how to set the default terminal to zshell online. Here's how I did it: Code -> Preferences -> Settings Search for 'Terminal'. Set "terminal.integrated.shell.osx&

One thing I've learned is to really understand something you have to do it. More times going over something = certainty. So if you forget the deets of something you read two weeks ago,

Basic Definitions: Economics the branch of knowledge concerned with the production, consumption (use of, disposal, decrease, exhaustion etc), and transfer of wealth (energy potential) Ledger a book of financial accounts. Also a flat

I had a little bit of an issue authenticating with docker compose. To add an admin user with docker compose you use the provided environments: MONGO_INITDB_ROOT_USERNAME, MONGO_INITDB_ROOT_PASSWORD,

Used a great digital ocean resource on securing an Ubuntu server. Condensed the steps into a script: #!/bin/bash sudo apt-get install ufw sudo ufw default deny incoming sudo ufw default allow outgoing

I've had a few discussions with friends recently about 'Fake news' and what can be done about it. This is a deep deep question with many ramifications. Especially when you are dealing with

I wanted to learn a bit more about Bitcoin development so I created a hello world example. First, generate an address and get some bitcoins. Then check your balance to make sure it

When you have to demo an iPad/iPhone app you can use QuickTime player. Connect your iPhone/iPad On your Mac, open QuickTime player File > New Screen Recording In the recording options,

IBM have created Carbon Design System for their Cloud products. The team describe the system as 'a collection of reusable HTML and SCSS partials to build websites and user interfaces'. So it is

I used to put a script in each package.json file called dev. The idea was to watch for changes and then run tests. No need to pollute the scripts section because we

Lets face it, setting up SSL can be a beyatch. Apart from setting up locally, then it is really easy (comparatively). Definitions SSL Secure sockets layer - a protocol which encrypts data so

Blatant copy of the default Ghost article :-) If you've gotten pretty comfortable with all the basics of writing in Ghost, then you may enjoy some more advanced tips about the types of

Interplanetary filing system is a decentralised filing system. It is a mashup of several things. Think of it like a torrent network, where you download a file using peers. Done over a Tor

Testing is essential to development. I've obviously used testing libraries such as Mocha, Chai, Ava, Tape, etc. But how would you go about writing one yourself? Especially how would you build a test

I never really got into the Redux stuff. At first glance it looked a bit convoluted; I was into other things so didn't get into it. Plus apps I was working on were

Authentication is verifying you are who you say you are. Authorisation is letting you do only what you are allowed to do. HTTP is stateless, that is how it was designed. However I

I started work on an FP library in order to learn this paradigm. I called it funcker - 'func' in functional, plus getting your head around fp can be a bit of a