LearnWebCode

// in a new folder be sure to run "npm init -y" and "npm install puppeteer"
const puppeteer = require("puppeteer")
const fs = require("fs/promises")

async function start() {
  const browser = await puppeteer.launch()
  const page = await browser.newPage()
  await page.goto("https://learnwebcode.github.io/practice-requests/")

  const names = await page.evaluate(() => {

oliatienza

Text(
  'YAY!',
  style: TextStyle(
      fontWeight: FontWeight.bold,
      fontSize: 60,
      shadows: [
        Shadow(
            offset: Offset(3, 3),
            color: Colors.black38,
            blurRadius: 10),

maboloshi

小米9 刷欧洲版 MIUI 固件及适当的本土化修复

本教程不保证它的权威性和正确性，也不对任何实践中的错误、数据丢失等问题负责！
本教程平台为 macOS, 其他系统请酌情参考

更新说明

@ 2020/8/29

1. 添加"介绍"
2. 更新 TWRP 信息

zhengger

# coding=utf-8
import csv
import http.client
import random
import requests
import socket
import time
import pymysql
from bs4 import BeautifulSoup

matteocrippa

Flutter

A quick cheatsheet of useful snippet for Flutter

Widget

A widget is the basic type of controller in Flutter Material. There are two type of basic Widget we can extend our classes: StatefulWidget or StatelessWidget.

Stateful

StatefulWidget are all the widget that interally have a dynamic value that can change during usage. It can receive an input value in the constructor or reference to functions. You need to create two classes like:

nrollr

Python environments in macOS

The latest version of macOS 10.13.3 has Python 2.7.10 installed by default, yet Python has been available on macOS and previously OS X for quite a while now.

Consult the Apple's Open Source Reference Library, and browse through the various releases of the OS to find out which Python version was included). But what if you have a project which requires Python 3 ?

The following instructions will guide you through the process of:

• installing Python 3 using Homebrew
• running multiple Python verions as sandboxed environments

Arachnid

/**
 * Base contract that all upgradeable contracts should use.
 * 
 * Contracts implementing this interface are all called using delegatecall from
 * a dispatcher. As a result, the _sizes and _dest variables are shared with the
 * dispatcher contract, which allows the called contract to update these at will.
 * 
 * _sizes is a map of function signatures to return value sizes. Due to EVM
 * limitations, these need to be populated by the target contract, so the
 * dispatcher knows how many bytes of data to return from called functions.

nrollr

#!/bin/bash
brew install redis  # Install Redis using Homebrew
ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents  # Enable Redis autostart

launchctl load ~/Library/LaunchAgents/homebrew.mxcl.redis.plist  # Start Redis server via launchctl
# homebrew.mxcl.redis.plist contains reference to redis.conf file location: /usr/local/etc/redis.conf 

redis-server /usr/local/etc/redis.conf # Start Redis server using configuration file, Ctrl+C to stop
redis-cli ping # Check if the Redis server is running

yoavniran

The Ultimate Unit Testing Cheat-sheet

---

• Sinon Chai
• Chai
• Sinon

christianroman

import cv2.cv as cv
import tesseract
gray = cv.LoadImage('captcha.jpeg', cv.CV_LOAD_IMAGE_GRAYSCALE)
cv.Threshold(gray, gray, 231, 255, cv.CV_THRESH_BINARY)
api = tesseract.TessBaseAPI()
api.Init(".","eng",tesseract.OEM_DEFAULT)
api.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyz")
api.SetPageSegMode(tesseract.PSM_SINGLE_WORD)
tesseract.SetCvImage(gray,api)
print api.GetUTF8Text()