wangpin34

categories:
  - category: tech
    feeds:
      - http://rachelbythebay.com/w/atom.xml
      - http://feeds.feedburner.com/ruanyifeng
      - http://blog.samaltman.com/posts.atom
      - https://dave.cheney.net/feed/atom

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const dotenv = require('dotenv')
const path = require('path')
const fs = require('fs')

function load() {
  if (process.env.stack) {
    return dotenv.config({ path: path.join(__dirname, `.env.${process.env.stack}`) })
  }
  return dotenv.config()
}

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// saved at root of repo, or global
registry = https://registry.npm.taobao.org
sass_binary_site = https://npm.taobao.org/mirrors/node-sass/
electron_mirror = https://npm.taobao.org/mirrors/electron/

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单位

inch（英寸）

pixel（像素）

ppi （Pixel Per Inch）

ppi，每英寸像素数量。

pix -> ppi

根据像素和屏幕尺寸计算 ppi。

/*

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function repeatChar(char, times) {
  if (typeof String.prototype.repeat === 'function') {
    return char.repeat(times)
  }
  let count = 0
  const array = []
  while (count < times) {
    count += 1
    array.push(char)
  }

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const debounce = (func, delay) => {
  let inDebounce
  return function() {
    const context = this
    const args = arguments
    clearTimeout(inDebounce)
    inDebounce = setTimeout(() => func.apply(context, args), delay)
  }
}

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/* 
 * 
 * Demo: https://repl.it/@wangpin34/array-utils
 */

/*
 * Filter elements which pass the test function
 */
func filter(in interface{}, testFunc func(interface{}) bool) *[]interface{} {
  b, _ := json.Marshal(in)

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.env.dev
.env.qa
.env.stg
.env.prod

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function handleKeydown(e) {
  if (e.shiftKey) {
    if (e.which !== 9) {
      e.preventDefault()
    }
  }
  if (e.which > 57) {
    e.preventDefault()
  }
  if (e.which === 32) {

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app.js

import React, { Component } from 'react';
import './app.scss';

const Bracket = ({b}) => <span className="bracket">&nbsp;{b}&nbsp;</span>;
const ListWrapper = ({children}) => <section>{children}</section>;
const MapWrapper = ({children}) => <section>{children}</section>;

const NodeKey = ({k}) => (<label>{'"' + k + '"'}:</label>);