This article has covered a variety of techniques for implementing a sequence number dispenser.
This example shows an internal method and assumes some other piece of code has identified the dispenser object.
On the other hand, if a pair of applications is taking turns updating the dispenser, perhaps as some kind of load balancing, that remembered state backfires on us.
对于*运行的不同应用程序(或相同应用程序的副本)，即使使用了dispenser类，也可能将读或写交叉存取到文件中。
With a paper towel from the dispenser, I wiped them away.
If nobody else has updated the dispenser object in the meantime, our later updates will only cost a single round-trip.
When using a P8-based dispenser object, the conceptual idea for getting a sequence number is the same: read the old value, update and store the new value, and return the new value to the caller.
Richmond: Excuse me, but I seem to be having trouble with this cash dispenser.
One of these days, you dispenser of depraved dementia, you are going to check in code that doesn't check its preconditions, and it's going to cost someone dearly!
Known as "ACES," Raytheon's advanced countermeasures electronic system consists of a radar warning receiver, digital jammer and chaff-flare dispenser.
The dispenser quickly filled the prescription for me.
This may work fine in some scenarios, but generally it would be a lot of bother to do this just to access the dispenser data.
您可以更改dispenser类以将更新的计数器值保存到一个文件中，但这可能导致新的问题，因为没有在各个进程之间协调同步。
