| import random | |
| import time | |
| def random_int64(): | |
| '''Generate a random 64-bit signed integer, with timestamp embedded in the higher 42 bits.''' | |
| CUSTOM_EPOCH = 1735689600 # 2025/01/01 00:00:00 UTC | |
| HIGH_42BIT_MASK = 0x7FFFFFFFFFC00000 # hex((2 ** 41 - 1) << 22) | |
| LOW_22BIT_MASK = 0x3FFFFF # hex(2 ** 22 - 1) |
| // SPDX-License-Identifier: MIT | |
| pragma solidity ^0.8.4; | |
| import "@openzeppelin/contracts@4.7.3/token/ERC721/ERC721.sol"; | |
| import "@openzeppelin/contracts@4.7.3/access/Ownable.sol"; | |
| import "@openzeppelin/contracts@4.7.3/utils/Counters.sol"; | |
| contract MyToken is ERC721, Ownable { | |
| using Counters for Counters.Counter; |
| #!/usr/bin/env python3 | |
| import math | |
| # >> Discrete Fourier transform for sampled signals | |
| # x [in]: sampled signals, a list of magnitudes (real numbers) | |
| # yr [out]: real parts of the sinusoids | |
| # yi [out]: imaginary parts of the sinusoids | |
| def dft(x): | |
| N, yr, yi = len(x), [], [] |
| let webpack = require('webpack'); | |
| let path = require('path'); | |
| module.exports = { | |
| entry: { | |
| app: './resources/assets/js/app.js', | |
| vendor: ['vue', 'axios'] | |
| }, | |
| output: { |
| - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { | |
| // 1. init window | |
| self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; | |
| UIViewController *rootViewController = [UIViewController new]; | |
| // 2. backgroundView using LaunchScreen.xib | |
| UIView *backgroundView = [[[NSBundle mainBundle] loadNibNamed:@"LaunchScreen" owner:self options:nil] firstObject]; | |
| backgroundView.frame = self.window.bounds; | |
| // Run from the dev tools console of any Youtube video | |
| // Accurate as of July 2, 2020. | |
| // | |
| // Copy and paste this into the dev console in a browser with the desired video loaded. | |
| // | |
| // NOTE: Some Youtube videos do not directly expose the video url in the response. | |
| // This script doesn't currently attempt to handle those. It will work for most other general video types though. | |
| (async () => { | |
| const html = await fetch(window.location.href).then((resp) => resp.text()).then((text) => text); |
| cask_args appdir: '/Applications' | |
| tap 'caskroom/cask' | |
| tap "homebrew/cask-fonts" | |
| tap 'caskroom/versions' | |
| tap "homebrew/bundle" | |
| tap "homebrew/core" | |
| tap "homebrew/services" | |
| tap "hsatac/toybox" | |
| brew "coreutils" | |
| brew "gnu-sed" |
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> | |
| <title>Fake auto play html audio in iOS Safari the right way</title> | |
| </head> | |
| <body> | |
| <h1>在 iOS Safari 中假装自动播放 HTML5 audio(音乐) 的正确方式</h1> | |
| <p>核心原理: 通过一个用户交互事件来主动 play 一下 audio</p> |
