devnamipress

Cursor Rules for Expo and React Native Projects

This document outlines the standardized rules and guidelines for developing mobile applications using Expo and React Native. These rules are designed to ensure consistency, maintainability, performance, accessibility, and error-free development across all projects. They apply to all Expo-based React Native apps and are crafted to minimize troubleshooting efforts and enforce best practices.

Cursor Adherence

• Mandatory Compliance: Cursor must read and strictly follow all rules in this document for every Expo and React Native project.
• Self-Check: Before generating code or modifying a project, Cursor must verify that its actions align with these guidelines.
• Error Prevention: If Cursor detects a potential violation of these rules (e.g., creating a new project inside an existing one), it must halt and prompt the user for clarification instead of proceeding.
• Documentation Reference: Cursor must reference this document (cursor-rules.md) w

t3dotgg

// Types for the result object with discriminated union
type Success<T> = {
  data: T;
  error: null;
};

type Failure<E> = {
  data: null;
  error: E;
};

idatsy

{
  "version": "0.1.0",
  "name": "pump",
  "instructions": [
    {
      "name": "initialize",
      "docs": [
        "Creates the global state."
      ],
      "accounts": [

zhe-t

import { Connection, SendOptions } from '@solana/web3.js';
export type JitoRegion = 'mainnet' | 'amsterdam' | 'frankfurt' | 'ny' | 'tokyo';
export const JitoEndpoints = {
    mainnet: 'https://mainnet.block-engine.jito.wtf/api/v1/transactions',
    amsterdam: 'https://amsterdam.mainnet.block-engine.jito.wtf/api/v1/transactions',
    frankfurt: 'https://frankfurt.mainnet.block-engine.jito.wtf/api/v1/transactions',
    ny: 'https://ny.mainnet.block-engine.jito.wtf/api/v1/transactions',
    tokyo: 'https://tokyo.mainnet.block-engine.jito.wtf/api/v1/transactions',
};
export function getJitoEndpoint(region: JitoRegion) {

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

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)
  }

jongan69

javascript:document.querySelectorAll('div.segment-start-offset').forEach(r => r.remove())

Xavier59

// exporting from a bs58 private key to an Uint8Array
// == from phantom private key to solana cli id.json key file
// npm install bs58 @solana/web3.js

const web3 = require("@solana/web3.js");
const bs58 = require('bs58');
let secretKey = bs58.decode("[base58 private key here]");
console.log(`[${web3.Keypair.fromSecretKey(secretKey).secretKey}]`);

// exporting back from Uint8Array to bs58 private key

esprengle

{
  "com.8bit.bitwarden": "bitwarden://",
  "com.apple.airport.mobileairportutility": "apmanage://",
  "com.apple.appleseed.FeedbackAssistant": "applefeedback://",
  "com.apple.AppStore": "itms-apps://itunes.apple.com/",
  "com.apple.AppStoreConnect": "shortcuts://run-shortcut?name=Icon%20Themer&input=%7B%22launch%22%3A%22Connect%22%7D",
  "com.apple.artistconnect": "shortcuts://run-shortcut?name=Icon%20Themer&input=%7B%22launch%22%3A%22Artists%22%7D",
  "com.apple.bnd": "beatsbond://",
  "com.apple.Bridge": "com.apple.bridge://x",
  "com.apple.calculator": "shortcuts://x-callback-url/run-shortcut?x-error=calc://",

System-Glitch

# Script to generate a new block every minute
# Put this script at the root of your unpacked folder
#!/bin/bash

echo "Generating a block every minute. Press [CTRL+C] to stop.."

address=`./bin/bitcoin-cli getnewaddress`

while :
do