taskt | formely sharpRPA ) is free and open-source robotic process | Automation library
kandi X-RAY | taskt Summary
kandi X-RAY | taskt Summary
taskt (formerly sharpRPA) is the first truly free, easy to use, and open-source process automation client built on the .NET Framework in C#. taskt allows you to build and design process automation without needing to write application code. taskt allows you to automate the boring stuff and create efficienies by giving you the power to craft a digital workforce that executes and performs rule-based automation. No API? No Problem! Included is a "what you see is what you get" bot designer with dozens of automation commands. An element recorder and screen recorder is also included that can record and replay scripted automation. taskt works by allowing a bot developer to design a bot configuration known as a script. The bot configuration is then intepreted by a script engine at run-time and executes against the bot developer's selected parameter inputs. Each command contains the definitions for the required inputs as well as the required logic at run-time. Please check out the Wiki for basic documenation surrounding the application and the available commands.
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QUESTION
In my Xamarin.Forms application, I have some code that looks like this
...ANSWER
Answered 2022-Jan-14 at 16:42An option is to use SemaphoreSlim in your unfocus event and your command event to make the command event wait until the unfocus event is complete.
When a part of your code enters the semaphore (using Wait or WaitAsync), it will block other parts of your code that try to enter the semaphore until the semaphore is released.
Here's an example of what that could look like:
QUESTION
Hi everyone : the problem is simple but i just cant find the solution
here is my code :
...ANSWER
Answered 2021-Jun-17 at 18:43Your are using ValueNotifier.
Use ValueNotifier.value , newTaskTitle.value in your case to get the String value.
code:
QUESTION
I am working in a C# console application with a 3rd party library and awaiting a Task that the 3rd party library is running. I've used Async await "all the way down". The full details of the issue I'm having are here but that's quite a long post so I'd like to simplify the problem here and try to abstract it from the details.
Essentially (very simplified) the code is the following:
...ANSWER
Answered 2021-Mar-15 at 16:03How can I detect the hang and retry safely?
There's only one answer to this: run that code in a separate process. You can redirect stdin/stdout to act as a "command/response" channel, and if it ever takes too long to respond, kill the entire process and restart it. This is fairly heavyweight, but it's the only way to properly cancel uncancelable code.
The reason a separate process is necessary is because your code needs to clean up everything that API was doing, and in the case of a hung API, the only way to do that is to have the OS step in and do cleanup. This is particularly the case where an API likely has some kind of exclusive lock on a hardware resource.
The problem with CancelAfterAsync is that it only cancels the waiting of the task. The Camera.Capture method is still in progress, potentially holding any hardware resources open, presumably indefinitely. So even if you get that working, there's no guarantee that starting a second Camera.Capture will work at all. It's much cleaner to have Camera.Capture in a separate process, kill that process (having the OS come in and clean up everything including handles to hardware resources), and then restart it.
It's hanging when returning from CaptureRawData, so it's possible that it's hanging while disposing one of the usings.
That is very likely. Since there is already a Camera.Capture running (and hung), it's possible that the disposal is waiting to access the hardware resource that is indefinitely in use. Again, this should be fixed by using a separate process, since the OS will step in and force those handles closed when the process is killed.
QUESTION
Trampoline is a monad and adds stack-safety to a monad transformer stack. It achieves this by relying on a special interpreter (monadRec), which is fed with the result of a monadic computation (actually it is a specialized version of the free monad pattern). For this reason the Trampoline monad must be the outermost monad, that is the base monad of the transformer stack.
In the following setting TaskT (which is essentially Cont with sharing) is the monad transformer and Trampoline the base monad:
ANSWER
Answered 2020-Dec-14 at 05:10There are several issues in this code snippet.
Issue #1: There is no monad transformer forIO (i.e. Task)
It's well known that there is no monad transformer for IO.[1] Your TaskT type is modeled after ContT, and ContT is indeed a monad transformer. However, you're using TaskT to perform asynchronous computations such as setTimeout, which is where the problem arises.
Consider the definition of TaskT, which is similar to ContT.
QUESTION
I have 2 projects, both use Net 5, entity framework Net 5 and async. The unique difference is that the project that is blocked use Sql Server and the other use Sqlite. But I guess the database is not the reason.
Porject 1, that is blocked:
...ANSWER
Answered 2020-Dec-10 at 16:57OK, figured out. The deadlock is becuase of SynchronizationContext and it's capturing as stated many times in comments to your question.
Usually solution is either use await all the way up, or ConfigureAwait(false), which you doing. BUT!
As stated here (section The Blocking Hack): https://docs.microsoft.com/en-us/archive/msdn-magazine/2015/july/async-programming-brownfield-async-development
If somewhere down the line Microsoft/EF uses conversion from old event-based async pattern then ConfigureAwait(false) will have no effect, cause context will be already captured anyway.
And turns out they do such conversion, here is the source of SqlCommand for SqlServer:
Look there for line 2996.
Now why SqlLite is working fine - because SqlLite doesn't not support async I/O, so all asyncs for SqlLite are fake, you could clearly see it in source of SqliteCommand:
https://github.com/dotnet/efcore/blob/main/src/Microsoft.Data.Sqlite.Core/SqliteCommand.cs
Line 406.
And explanation for "fake" is here - https://docs.microsoft.com/en-us/dotnet/standard/data/sqlite/async
QUESTION
I'm in a situation where we have some code that is run by user input (button click), that runs through a series of function calls and result in generating some data (which is a quite heavy operation, several minutes). We'd like to use Async for this so that it doesn't lock up the UI while we're doing this operation.
But at the same time we also have a requirement that the functions will also be available through an API which preferably should be synchronous.
Visualization/Example (pseudo-code):
...ANSWER
Answered 2020-Jun-09 at 13:35You can utilize .GetAwaiter().GetResult()
as per your example, it would look like:
QUESTION
async Task CancelAfterAsync(Func> startTask, TimeSpan timeout, CancellationToken cancellationToken)
{
using (var timeoutCancellation = new CancellationTokenSource())
using (var combinedCancellation = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeoutCancellation.Token))
{
var originalTask = startTask(combinedCancellation.Token);
var delayTask = Task.Delay(timeout, timeoutCancellation.Token);
var completedTask = await Task.WhenAny(originalTask, delayTask);
// Cancel timeout to stop either task:
// - Either the original task completed, so we need to cancel the delay task.
// - Or the timeout expired, so we need to cancel the original task.
// Canceling will not affect a task, that is already completed.
timeoutCancellation.Cancel();
if (completedTask == originalTask)
{
// original task completed
return await originalTask;
}
else
{
// timeout
throw new TimeoutException();
}
}
}
ANSWER
Answered 2020-May-19 at 13:36Please check the code for usage. Also cancelafter function posted in your post is one way of doing it. Another way of same thing to doing it as follows. Also for clear understanding cancelling task in this fashion and its consequences here
QUESTION
I never had a good chance to go deep into async/await , so I have just a gist of what it does.
So I tried it in WinForms app like this:
...ANSWER
Answered 2020-Mar-19 at 06:14Async methods are a lot like generator methods. The compiler will split up your code at each await operator. A block of code is inserted to check if the task is already complete, in which case the method immediately continues. Or if the task is not complete, a callback is registered to continue execution later, and your method returns.
Returning early is the whole point of an async method.
QUESTION
This works:
...ANSWER
Answered 2020-Feb-24 at 17:18What are you using to call the stored procedure?
What version and release of Db2 for i?
In the Run SQL Scripts component of IBM ACS or the older Access for Windows, string literals in your statements are treated as varchar.
Thus the CAST('0213725501A421D384233E5001' as char(26)) makes sense. What doesn't is the error message. Normally, you'd get a procedure not found error as the Db is looking for a procedure named PROGRAM.GET_TASKT_ID_BY_TASK_WEB_IDENTIFIER that takes a varchar parameter and the only thing that exists is a procedure that takes a char(26).
IBM's tools have gotten better at implicitly converting when needed. But I usually go with an explicit conversion when testing manually (as you've done here). Or I just make the parms varchar to start. And convert to character within the procedure if needed.
The char/varchar difference doesn't usually matter to the client code, as it can be specific in it's type definitions. It's only a factor for interactive tools like ACS that are executing dynamic statements.
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