QR code stands for quickresponse, a reference to how speedily the data they contain can be decoded.
QR是快速反应的意思,意指代码中的数据能够迅速解码。
2
Listing 9, a quick example from Ruby on Rails, shows a closure that is used to code the response of an HTTP request.
清单9是Ruby on Rails中的一个简短例子,清单中的闭包用于为一个HTTP请求编写响应代码。
3
Since this is critical code that you'll use in some form in every Ajax application you write, take a quick tour through what a basic request/response model with Ajax looks like.