Technology

Go Lang

  • Stream: Why we switched from Python to Go
  • Advantages
    1. Performance: Go is typically 30 times faster than Python
    2. Language Performance Matters
    3. Developer Productivity & Not Getting Too Creative
    4. Concurrency & Channels: Goroutines are Go’s lightweight approach to threading, and channels are the preferred way to communicate between goroutines.
    5. Fast Compile Time
    6. The Ability to Build a Team
    7. Strong Ecosystem
    8. Gofmt, Enforced Code Formatting
    9. gRPC and Protocol Buffers
  • Disadvantages
    1. Lack of Frameworks
    2. Error Handling: it’s easy to forget to handle an error by accident
    3. Package Management
  • all performance-intensive code will be written in Go
  • dep - Dependency management for Go
  • Virtualgo: Easy and powerful workspace based development for go

Other

GU Self-checkout

趁著清明連假去了一趟福岡，剛好在天神的 GU 看到了自動結帳機器，顧客只要把整個籃子的衣服放進去底下的小櫃子中，機器就會在幾秒鐘內辨識出所有的產品並結算出總金額，最後再用現金或信用卡付款，整個結帳的速度比櫃檯的店員一件一件商品刷條碼快多了，只是結帳完後要自己將商品裝進袋子，沒有店員幫忙裝。