🍑

Mark Odayan markodayan

🍑

🅱️lonkchains and distributed systems. Writing code once in a blue moon

markodayan / byte-array-hex.js

Created August 18, 2022 23:04

Byte array expressed in hexadecimal format

markodayan / byte-array.js

Last active August 21, 2022 01:47

JSON to Byte Array (Chris Redfield object)

	// We have a string -> "{"name":"Chris Redfield","age":30,"job":"STARS soldier"}"

	// The string represented as an array of bytes
	// with decimal values where each byte ranges from 0 - 255
	[
	123, 34, 110, 97, 109, 101, 34, 58, 34, 67,
	104, 114, 105, 115, 32, 82, 101, 100, 102, 105,
	101, 108, 100, 34, 44, 34, 97, 103, 101, 34,
	58, 51, 48, 44, 34, 106, 111, 98, 34, 58,
	34, 83, 84, 65, 82, 83, 32, 115, 111, 108,

markodayan / deserialise.go

Created August 14, 2022 22:39

Deserialise - receive serialised payload and deserialise into a golang struct variable

	// Step 1
	serialised := receiveSerialisedPayload();

	// Step 2 - We can deserialise into a struct with knowledge of the payload structure
	type Person struct {
	Name string `json:"name"`
	Age int `json:"age"`
	Job string `json:"job"`
	}

markodayan / serialise.js

Last active August 14, 2022 22:34

JavaScript app - serialise data and send to Golang app

	// Step 1
	let data = {
	name: "Chris Redfield",
	age: 30,
	job: "STARS soldier",
	};

	// Step 2 (Serialisation Step)
	let serialised = JSON.stringify(data);

markodayan / ReactFC.tsx

Last active January 22, 2022 16:57

React TypeScript child examples (destructureProps most recommended - React FC not necessary anymore for the most part)

	import React from 'react';

	interface ChildProps {
	message: string;
	}

	const Child: React.FC<ChildProps> = ({ message }) => {
	return <div>{message}</div>;
	};

markodayan / deps.sh

Created January 22, 2022 13:22

React Typescript Deps (Alongside CRA TS)

	npm i -D jest ts-jest prettier codecov cypress eslint eslint-config-prettier eslint-plugin-react @typescript-eslint/eslint-plugin @typescript-eslint/parser
	npm i -D @types/jest

markodayan / jest.config.js

Created December 30, 2021 15:05

Jest Configuration (specifically TS prep)

	const { pathsToModuleNameMapper } = require('ts-jest');
	const { compilerOptions } = require('./tsconfig.json');

	module.exports = {
	preset: 'ts-jest',
	testEnvironment: 'node',
	moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths),
	modulePaths: ['<rootDir>'],
	};

markodayan / ex-1.js

Created December 20, 2021 20:43

Binding this context


	const Person = {
	firstName: "Lawrence",
	lastName: "Eagles",
	sayName: function () {
	setTimeout(function() {
	console.log("my fullname is " + this.firstName + " " + this.lastName)
	}.bind(this), 100) // binds this here.
	}
	}

markodayan / async.ts

Last active December 20, 2021 12:03

Asynchronising functional programming pattern example

	type Fn = (...args: any[]) => any;

	function makeAsync<T extends Fn>(fn: Fn): (...args: Parameters<T>) => Promise<ReturnType<T>> {
	return function (this: any, ...args: Parameters<T>): Promise<ReturnType<T>> {
	return new Promise<ReturnType<T>>((res, rej) => {
	try {
	res(fn.call(this, ...args));
	} catch (e) {
	rej(e);
	}

markodayan / crack.js

Last active November 23, 2021 08:17

Cracking private key with last 2 mnemonic words absent (18 bits of entropy at play)

	const HDWallet = require('ethereum-hdwallet')
	const bip39 = require('bip39');

	const fs = require('fs')

	const seedStart = 'program deny train foot scrap marble anxiety oblige hybrid clean'

	const words = fs.readFileSync('./words.txt').toString('utf-8').split('\r\n')

	for(let x = 0; x < words.length; x++){