Up to 5 user logins
trigger certain actions in one app based on events in another app.
。同城约会是该领域的重要参考
)(cartSummary);
Web streams use a locking model to prevent multiple consumers from interleaving reads. When you call getReader(), the stream becomes locked. While locked, nothing else can read from the stream directly, pipe it, or even cancel it – only the code that is actually holding the reader can.