開源日報 每天推薦一個 GitHub 優質開源項目和一篇精選英文科技或編程文章原文，堅持閱讀《開源日報》，保持每日學習的好習慣。
今日推薦開源項目：《Google Guava》
今日推薦英文原文：《Google Maps adds a COVID-19 layer》
今日推薦開源項目：《Google Guava》傳送門：項目鏈接
推薦理由： 谷歌Guava是一個頂級的通用Java庫。與Apache Commons一樣，它也是模塊化的，包含許多獨立的庫。它涵蓋了基本實用工具、集合、字元串操作、並發實用工具、圖形庫、散列等等。與Apache Commons library相比，Guava具有更好的設計。如果你想要創建或使用程序類庫，可以首選Guava庫。
今日推薦英文原文：《Google Maps adds a COVID-19 layer》作者：Corinne Reichert
原文鏈接：https://www.cnet.com/health/google-maps-adds-a-covid-19-layer/
推薦理由：截至美國東部時間22日11時23分（北京時間23時23分），美國累計新冠確診病例超過686萬例，累計死亡病例突破20萬例。近期，美國新冠疫情指標又有抬頭傾向，最近一周單日新增確診病例和死亡病例均呈上升趨勢。谷歌地圖新添了有關新冠病毒的模塊, 以幫助人們更好地做出出行決策.

Google Maps adds a COVID-19 layer

Google on Wednesday announced that it's added a COVID-19 layer to the Google Maps app, which offers critical information designed to help you decide where to go and what to do while still staying safe.

A color-coded system will show you the density of new coronavirus cases in any given area and a label will tell you whether cases are trending up or down there, Google said Wednesday.

The new info is visible for all 220 countries and territories available on Google Maps. You can see it at country, state, province, county and city level data, depending on the area.

Here's how to use it:

  1. Open Google Maps
  2. Tap the "layers" button on the top right corner of your screen (the area where you can switch to satellite or terrain views)
  3. Click on COVID-19 info
  4. A seven-day average of new coronavirus cases per 100,000 people will then show up for that area on the map.
Google says it's getting the data "from multiple authoritative sources, including Johns Hopkins, The New York Times and Wikipedia."

"These sources get data from public health organizations like the World Health Organization, government health ministries, along with state and local health agencies and hospitals," Google added in a blog post.
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