jongan69

use solana_sdk::{signature::Keypair, signer::Signer};
use bs58;

fn main() {
    let wallet = Keypair::new();
    let public_key_base58 = bs58::encode(wallet.pubkey().to_bytes()).into_string();
    let secret_key_base58 = bs58::encode(wallet.to_bytes()).into_string();
    
    println!("Public Key (Base58): {}\nSecret Key (Base58): {}\n", public_key_base58, secret_key_base58);
}

jongan69

LEET CODE STATS

https://alfa-leetcode-api.onrender.com/jongan69

jongan69

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:

jongan69

console.log("%c sylish ash ","color: red; background-color: lightblue; border: solid");

jongan69

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';

jongan69

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

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

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

jongan69

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()

jongan69

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" />,

jongan69

useTimeout

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

Usage

import { useTimeout } from './useTimeout';

const callback = () => {

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: