canceller | Noise cancellation with WebAudio API

I have a user entered string:

I wrote the following code to fill an autocomplete, when users enter new characters the previous requests for previous phrases must be aborted, but it doesn't work. here is my controller code:

I was playing around with Combine and I realised that instead of calling .cancel() on an AnyCancellable, making the AnyCancellable an Optional and setting it to nil also stops the stream of values.

Is setting an AnyCancellable? to nil instead of calling .cancel() on an AnyCancellable a bad thing? Does it have any negative consequences such as leaking memory or something?

For reference, this is the code:

I have this huge database in which there are some budget transfers that, when looking at the grand total, cancel each other out. Problem is, I can't seem to understand how I can delete all the rows that cancel each other out. The dataframe below works as an example:

test = pd.DataFrame(data = [1050.77, 13.45, 6.26, -1050.77, 10027, 6.26, 13.45, 13.45, -13.45, -6.26, -16800, 16800], columns = ['Test'])

Disclaimer: This is my first time working with ReactPHP and "php promises", so the solution might just be staring me in the face

I'm currently working on a little project where I need to create a Slack bot. I decided to use the Botman package and utilize it's Slack RTM driver. This driver utilizes ReactPHP's promises to communicate with the RTM API.

My problem:

When I make the bot reply on a command, I want to get the get retrieve the response from RTM API, so I can cache the ID of the posted message.

Problem is that, the response is being returned inside one of these ReactPHP\Promise\Promise but I simply can't figure out how to retrieve the data.

What I'm doing:

So when a command is triggered, the bot sends a reply Slack:

I'm having a problem of updates in my application. I can't understand very well what is going on with the data flow between the subviews.

• ViewModel: ObsebsrvableObject

• MainView with ObservedObject (viewModel)

  • ChildView with a list from MainView observed object (just the list is passed as a normal array - not bindable)
    • NephewView with the list passed to the childView, still as a normal array

Every time I modify the list, the MainView updates triggering a new rebuild of ChildView, but the NephewView does not update

I would like to update the Main, the Child and the NephewView views every time the observedObject get an update

I can't understand why if the Child View rebuild, the nephew doesn't.

I'm trying to cancel a Deferred chain (main) whenever some chained deferred (child) raises an error. But I'm getting an AlreadyCalledError and the chain continues its work.

Here's the code:

I want to check that if a member function of a particular name exists on a object, if it does call the member function or make a reference of that member function.

Here I don't have type of the object, i.e. the object maybe does not implement any interface but has a member function cancel().

I used this method (reflection) to check if the member function exists, i.e. if (object::class.members.any { it.name == "cancel" }) and when this statement returns true I am sure that the method does exist but compiler is still unsure that the 'cancel' method exist in the object or not

How to change the behavior of a task cancellation from where the task is being cancelled?

What I would dream of: