一些解决办法得到代理人/行为者的妥善解决,有些解决办法没有解决。 这种区别实际上并不比更具体地涉及一般解决办法类别中的特定问题。 这是一种(非常简短的)比较法者/代理人诉案。 提及试图澄清该工具必须适合一致的问题。
Actors excel in distributed situation where no data needs to be concurrently modified. If your problem can be expressed purely by passing messages then actors will do the trick. Actors work poorly where they need to modify several related data structures at the same time. The canonical example of this being moving money between bank accounts.
Clojure s refs are a great solution to the problem of many threads needing to modify the same thing at the same time. They excel at shared memory multi-processor systems like today s PCs and Servers. In addition to the Bank account example, Rich Hickey (the author of clojure) uses the example of a baseball game to explain why this is important. If you wanted to use actors to represent a baseball game then before you moved the ball, all the fans would have to send it a message asking it where it was... and if they wanted to watch a player catching the ball things get even more complex.
衣物有木.,使写作的 had体工作看起来像书写衣物一样很多。
