queue

问题 Is there a specific type of Queue that is "closable", and is suitable for when there are multiple producers, consumers, and the data comes from a stream (so its not known when it will end)? I've been unable to find a queue that implements this sort of behavior, or a name for one, but it seems like a integral type for producer-consumer type problems. As an example, ideally I could write code where (1) each producer would tell the queue when it was done, (2) consumers would blindly call a

问题 does somebody know, can I use SuccessMessageMixin with RedirectView? Because when I use it in my views: class CarRentView(SuccessMessageMixin,RedirectView): success_message = "Well done!" permanent = False query_string = True model = Car def get_redirect_url(self, *args, **kwargs): car = get_object_or_404(Car, pk=kwargs['pk']) car.rent=True car.save() return reverse('cars') there is nothing happend. And I've got another question - is there any way to 'block' car, which is rent for next user

问题 I have found the following solutions Clone function in the documentation on MSDN for the Queue class. But in my code, i get the following error: private Queue<int> myQueue = new Queue<int>(); var clone = myQueue.Clone(); 'System.Collections.Generic.Queue' does not contain a definition for 'Clone' and no extension method 'Clone' accepting a first argument of type 'System.Collections.Generic.Queue' could be found (are you missing a using directive or an assembly reference?) How can I use this

问题 I have found the following solutions Clone function in the documentation on MSDN for the Queue class. But in my code, i get the following error: private Queue<int> myQueue = new Queue<int>(); var clone = myQueue.Clone(); 'System.Collections.Generic.Queue' does not contain a definition for 'Clone' and no extension method 'Clone' accepting a first argument of type 'System.Collections.Generic.Queue' could be found (are you missing a using directive or an assembly reference?) How can I use this

问题 In laravel 4, I could push a closure onto the queue with queue::push(function...) , but this no longer works in laravel 5. Instead, it appears that I have to make a custom Job class for every function that I want to push onto the queue. Since the functions I want to be pushing are only a couple of lines long, and are only ever used in exactly one place, it really seems like a waste of time and space to be writing up a full class for every case. The best "solutions" I can currently think of,

问题 In laravel 4, I could push a closure onto the queue with queue::push(function...) , but this no longer works in laravel 5. Instead, it appears that I have to make a custom Job class for every function that I want to push onto the queue. Since the functions I want to be pushing are only a couple of lines long, and are only ever used in exactly one place, it really seems like a waste of time and space to be writing up a full class for every case. The best "solutions" I can currently think of,

问题 It seems that MSMQ doesn't use any Database management system to manage messages. How does MSMQ manage messages? Does it store the messages in flat file? I'm trying to implement a messages management system. 回答1: MSMQ uses flat files located in %windir%\system32\msmq. If you want to implement your own queueing, I suggest you take a look at Ayende's blog post on queueing 回答2: it stores them as files on the disk. If you wanna manage them use the System.Messaging API 来源： https://stackoverflow

问题 How to log/measure the size of Redis command's queue. The Redis is single-threaded, so it runs commands sequentially, as I guess there is command queue there, where the incoming commands are stored, and executed one by one. The SLOWLOG command only shows the execution time, so the question is, is there a way to get how long the command was in queue before starting of execution. 回答1: AFAIK, there is no command queue in Redis. The event loop is notified when there is something to read on a

问题 I'm making a wrapper to queue type, but each time I add element, I want to sort everything inside. Mostly it will be Integer . I'm not too familiar with Collections framework, is there any simple solution ? public class Round<Type> { private Queue<Type> qe; public Round(){ this.qe = new LinkedList<Type>(); } public void push(Type p){ this.qe.offer(p); //Collections.sort(this.qe); Here I want to sort this } public Type pop(){ return this.qe.poll(); } } 回答1: Are you sure that is what you want?

问题 I'm making a wrapper to queue type, but each time I add element, I want to sort everything inside. Mostly it will be Integer . I'm not too familiar with Collections framework, is there any simple solution ? public class Round<Type> { private Queue<Type> qe; public Round(){ this.qe = new LinkedList<Type>(); } public void push(Type p){ this.qe.offer(p); //Collections.sort(this.qe); Here I want to sort this } public Type pop(){ return this.qe.poll(); } } 回答1: Are you sure that is what you want?