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You can add app to the meeting, The meeting app can deliver a user experience for each stage of the meeting lifecycle including pre-meeting, in-meeting and post-meeting app experience, depending on the attendee's status.Please check this docs for more info.

As pointed out in the comments, you can use group_by from dplyr to accomplish this.

First, you can extract keywords for each comment/sentence. Then unnest so each keyword is in a separate row with a date.

Then, use group_by with both date and comment included (to get frequency for combination of date and keyword together). The use of summarise with n() will give number of mentions.

Here's a complete example:

After reading the snippets, the code looks like it should works but it doesn't. In that case I would add debugPrint(#function) to check if following methods are executed:

You can work with elem :: Eq a => a -> [a] -> Bool to check if an item is an element of a list (even from any Foldable).

Your function thus looks like:

I do not fully understand what you mean. why are you creating a file for new news? You can use database for other and new news. This way it becomes news.php and you can show it by every news id.I do not be able to understand exactly what you want to do

Put QueryClientProvider at the root of your react app.

I guess in index file.

At the time function tries to run hook useQuery hook query client cache is not initialized and that will trigger that error.

If you don't want to keep that in index at least it should be in the parent function not in the same from where you are using useQuery, useMutation or any hook.

You could try this instead if you prefer to see all the original data, but you do need to group the non-aggregated columns otherwise:

You're not reading in the names correctly here:

Who handles events in event queue to OS?

How OS events work depends upon the specific type of event. Disk I/O works one way and Networking works a different way. So, you can't ask about OS events generically - you need to ask about a specific type of event.

Does event loop polls for event completion in each event queue or does OS notifies back?

It depends. Timers for example are built into the event loop and the head of the timer list is checked to see if it's time has come in each timer through the event loop. File I/O is handled by a thread pool and when a disk operation completes, the thread inserts a completion event into the appropriate queue directly so the event loop will just find it there the next time through the event loop.

Where and who decides whether to call native asynchronous API or handle over to a thread pool?

This was up to the designers of nodejs and libuv and varies for each type of operation. The design is baked into nodejs and you can't yourself change it. Nodejs generally uses libuv for cross platform OS access so, in most cases, it's up to the libuv design for how it handles different types of OS calls. In general, if all the OSes that nodejs runs on offer a non-blocking, asynchronous mechanism, then libuv and nodejs will use it (like for networking). If they don't (or it's problematic to make them all work similarly), then libuv will build their own abstraction (as with file I/O and a thread pool).

You do not need to know the details of how this works to program asynchronously in nodejs. You make a call and get a callback (or resolved promise) when its done, regardless of how it works internally. For example, nodejs offers some asynchronous crypto APIs. They happen to be implemented using a thread pool, but you don't need to know that in order to use them.