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In Task Parallel Library: How to defer Task.TaskFactory.FromAsync task execution?
Category : Programming Languages

I have a method that returns a task like:

public static Task<int> SendAsync(this Socket socket, byte[] buffer, int offset, int count)
if (socket == null) throw new ArgumentNullException("socket");
if (buffer == null) throw new ArgumentNullException("buffer");
return Task.Factory.FromAsync<int>(
socket.BeginSend(buffer, of

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Does Task.Wait(int) stop the task if the timeout elapses without the task finishing?
Category : Programming Languages

I have a task and I expect it to take under a second to run but if it takes longer than a few seconds I want to cancel the task.

For example:

Task t = new Task(() =>
while (true)


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Celery: Executing a task after another task, but return the result of the first task
Category : Programming Languages

Sometimes I need to run task B after task A, but return the result of task A. Looking at the docs, I have tried to (Avoid launching synchronous subtasks)

So I would use a chain, like this:

def A():
return 5
def B():
return 2
def do_all():
chain = A.s() | B.s()
return res

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How to get the classes task for a JavaExec task in gradle to depend on another task?
Category : Java

Is this even possible? I have something like:

task taskB(dependsOn: taskA) {
// Do stuff.
task taskA {
// Do stuff.
task runClass(dependsOn: 'classes', type: JavaExec) {
main = 'com.some.package.MainClass'
classpath = some.classpath

I want to run taskB before classes

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In Rally: Can I map custom task states to existing Task states in a Rally Task Board (similar to Kanban for user stories)?
Category : Web Design

What would it take to create a TASK card board with mappable states like Rally's existing Kanban board supports.

I would like to add one or two custom task states: like "ready to merge" and "unit test complete". The existing task board doesn't support this feature.

I played with the card board code using the Rally 2.0 SDK (preview) and was able to quickly display tasks

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Java task queue, threadpool and threads with callback to inform when a new task can start
Category : Development Tools & Services

I have tried to find a way how to load several web pages in multiple threads with a certain maximum limit of threads, in a way such that a new page is loaded when one finish. There should also be another post-processing threads for the loaded content after the page is downloaded so that the whole process is chained.

How I'd like to make it:

Task queue holds the pages that s

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Invoking Rake::Task in rails causes “Don't know how to build task…”
Category : Web Design

Trying to integrate some friendly_id gem functionality on a controller method.

Essentially, I have a Market object, which has its URL created based on a custom method. Since it's based on a custom method, friendly_id won't update the URL when the Market object gets updated. Friendly_id does offer a redo_slugs rake task, but when I call it from within my controller, it tells me tha

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Running Basic Laravel Task in Routes.php - “Sorry, can't find that task.”
Category : Programming Languages

I'm trying to setup a Laravel task to eventually be called as a cron job using the artisan interface.

In trying to get a simple task working, I keep getting the error that Laravel can't find that task: "Sorry, can't find that task."

Is this a problem with my version? I'm using a version downloaded less than a month ago which I know is at least v3.0 but I don't know how t

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An unhandled exception in Mapper or Reducer Task would make the task failed?
Category : Coding

I am wondering if an unhandled exception in a mapper task (or a reducer task) would make the task failed or only the particular input pair of the time would be ignored? I guess it is the former but not so sure.

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In linux scheduler, does it track the current sleeping task or killed task?
Category : Operating Systems

I know when a task runs, it is enqueued into the running queue. When it sleeps, it is dequeued from the running queue. But is there a queue for sleeping tasks? I didn't see this in the source code.

And even if I were to create such a queue, how can I know when a task is killed and should be removed from the sleeping queue?

Can anyone give me a hint? Thanks,

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