lilywang711

// 定义
export interface MyInputHandles {
  focus(): void;
}

const MyInput: RefForwardingComponent<MyInputHandles, MyInputProps> = (
  props,
  ref
) => {
  const inputRef = useRef<HTMLInputElement>(null);

wmayner

from IPython.display import Markdown, display

colors = ['#018700', '#00acc6', '#e6a500']

display(Markdown('<br>'.join(
    f'<span style="font-family: monospace">{color} <span style="color: {color}">████████</span></span>'
    for color in colors
)))

bvaughn

React recently introduced an experimental profiler API. This page gives instructions on how to use this API in a production release of your app.

Table of Contents

• Profiling in production
  • Create React App
  • Webpack 4

Profiling in production

React DOM automatically supports profiling in development mode for v16.5+, but since profiling adds some small additional overhead it is opt-in for production mode. This gist explains how to opt-in.

sod

var convertToString = function(array) {
  return array.map((item, index) => '"' + index + ' ' + item.replace(/"/g, '') + '"').join('');
}

var find = function(needle, sourceAsString, source) {
  var rx = new RegExp('"(\\d+) ([^"]*' + needle + '[^"]*)"','gi');
  var i = 0, results = [];
  while (result = rx.exec(sourceAsString)) {
    results.push(result[1]);
    if (results.length >= 100) {

remarkablemark

How to add an image to a gist

1. Create or find a gist that you own.
2. Clone your gist (replace <hash> with your gist's hash):

   # with ssh
   git clone git@gist.github.com:<hash>.git mygist
   
   # with https

git clone https://gist.github.com/.git mygist

dlmanning

function hoverable (WrappedComponent, propName = 'hover') {
  return class HoverableComponent extends Component {
    constructor (props) {
      super(props)

      this.state = { hovered: false }
    }

    turnHoverOn () {
      this.setState({ hovered: true })

jhnns

#!/bin/bash

if [ -z "$1" ]; then
    echo "Usage: git pr [clean] [<remote>] <id-or-url>"
    echo ""
    echo "Examples:"
    echo "git pr 42                                              -->  git fetch origin pull/42/head:pr/origin/42"
    echo "git pr upstream 42                                     -->  git fetch upstream pull/42/head:pr/upstream/42"
    echo "git pr https://github.com/peerigon/phridge/pull/1      -->  git fetch https://github.com/peerigon/phridge.git pull/1/head:pr/peerigon/phridge/1"
    echo "git pr clean                                           -->  Deletes all branches that match pr/*/* and pr/*/*/*"

iMilnb

from flask import Flask, request
import requests
import json

app = Flask(__name__)

def msg_process(msg, tstamp):
    js = json.loads(msg)
    msg = 'Region: {0} / Alarm: {1}'.format(
        js['Region'], js['AlarmName']

rjattrill

# Join multiple lines without new line
value: >
        part 1
        part 2
        
# Join with newline
value2: |
        line 1
        line 2

mdaniel

# -*- mode: ruby -*-
# vi: set ft=ruby :

Vagrant.configure("2") do |config|
  # All Vagrant configuration is done here. The most common configuration
  # options are documented and commented below. For a complete reference,
  # please see the online documentation at vagrantup.com.

  # Every Vagrant virtual environment requires a box to build off of.
  config.vm.box = "ubuntu1204_64"