Jonathan Gan jongan69

Form

This is a simple form component created using React. It is used to collect data from the user and submit it to the server.

Features

This component has the following features:

useTimeout

A custom React Hook that allows you to call a callback after a specified delay.

Usage

import { useTimeout } from './useTimeout';

const callback = () =&gt; {

Split Weeks

This code finds split weeks for a given year.

Usage

To use the code, define year as the year to find split weeks for. Then call the getMonthlyDates and isSplitWeek functions.

let year = new Date().getFullYear()

React usePagination Hook

This hook returns a pagination range based on the current page, total number of items, and page size.

Usage

Import the usePagination hook in your React component as follows:

import { usePagination } from './usePagination';

Option Premium Calculator

A Python script using Black-Scholes model to calculate total option premiums for given stock options. Customize with your data and parameters.

Components: Black-Scholes Formula: The calculate_option_premium function implements the Black-Scholes formula, taking into account the current stock price (S), option strike price (K), time to expiration (T), risk-free interest rate (r), and volatility of the underlying asset (sigma). It supports both call and put options.

Black-Scholes Formula

The Black-Scholes formula is a mathematical model used for calculating the theoretical price of European-style options. The formula for the call option is given by:

	var Gpio = require('onoff').Gpio; //include onoff to interact with the GPIO
	var LED = new Gpio(4, 'out'); //use GPIO pin 4, and specify that it is output
	var blinkInterval = setInterval(blinkLED, 250); //run the blinkLED function every 250ms

	function blinkLED() { //function to start blinking
	if (LED.readSync() === 0) { //check the pin state, if the state is 0 (or off)
	LED.writeSync(1); //set pin state to 1 (turn LED on)
	} else {
	LED.writeSync(0); //set pin state to 0 (turn LED off)
	}

	import {cleanup, fireEvent, render} from '@testing-library/react';
	import CheckboxWithLabel from '../CheckboxWithLabel';

	// Note: running cleanup afterEach is done automatically for you in @testing-library/react@9.0.0 or higher
	// unmount and cleanup DOM after the test is finished.
	afterEach(cleanup);

	it('CheckboxWithLabel changes the text after click', () => {
	const {queryByLabelText, getByLabelText} = render(
	<CheckboxWithLabel labelOn="On" labelOff="Off" />,

	const handleSubmit = async e => {
	e.preventDefault();

	// @TODO - handle validation
	// ...

	// @TODO - handle submit based on operation
	switch (operation) {
	case 'add':
	console.log(dataType, state);