Engage | Notes and resources used during DDLS course delivery | Azure library

I'm not sure if I'm just misunderstanding how Observers work in Laravel or if I'm doing something incorrectly. I'm currently running on Laravel 6, though this application is currently in the process of being upgraded by another team.

What I have:

• Parent model, called Parent
• Parent observer, called ParentObserver
• Child model, called Child
• Child observer, called ChildObserver
• Grandchild model, called Grandchild

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My application provide user with the ability to like or dislike a tweet. The API end-point for the actions are POST favorites/create and POST favorites/destroy. Also in the documentation, there is this information "The immediately returned Tweet object may not indicate the resultant favorited status of the Tweet" which not what I want, the favorite_count is always wrong (when you like the first time, nothing happens. but the second time you dislike the favorite_count increase). I want it to return the updated tweet so that I can display real data in my application. BTW, my application is built with React and Redux in the front-end and Nodejs in the back-end.

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I am building an airport model with passengers spawning, shopping/eating and departing.

Most passengers rush to their GateArea (Polygonal Node) and wait there until they feel it is appropriate to engage in discretionary activities. When they think about leaving the GateArea they generate a "Eat"- or "Shop"- Goal" and are transferred into a PedGoTo-Block that is linked to the according shop. At this point I sometimes get the error:

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The scenario I'm emulating with the below minimal example is allowing a user to engage with a Shiny App (click the numericInput control and see server-side events occur) while a long-running download is occurring (simulated with Sys.sleep(10) within downloadHandler).

In a synchronous setting, when the "Download" button is clicked, the user can still interact with UI elements, but other Shiny calculations (in this case, renderText), get put in a queue. I'd like the asynchronous setting, where the download occurs in the background, and users can still interact with the UI elements and get desired output (e.g. renderText).

I'm using callr::r_bg() to achieve asynchronicity within Shiny, but the issue is that my current code of the downloadHandler is incorrect (mtcars should be getting downloaded, but the code is unable to complete the download, 404 error message), I believe it's due to the specific way in which downloadHandler expects the content() function to be written, and the way I've written callr::r_bg() is not playing nicely with that. Any insights would be appreciated!

Reference:

https://www.r-bloggers.com/2020/04/asynchronous-background-execution-in-shiny-using-callr/

Minimal Example:

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I have a table that looks like this:

The average and total rows are being calculated like so:

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I am using React-TypeScript to create a list of employees, edit and delete them. However my edit button does not do anything on click. Any idea on how I can fix this problem?

I have used the same code for the "Delete" function and works perfectly. Following are my two react-typescript files which I have my codes written in and I also have an app.tsx file which all of these are being imported in it.

CreateEmployee.tsx

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I have a string of text with numbered paragraphs from '1.' to '221.', however, there are certain paragraphs that do not follow the order and I want to remove them. Here is how the data looks:

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I'm a very newbie to Twitter bots. I've started reading some tutorials but I got this error while running the code:

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How can I use the index of a "special" value from a nested column (ex: the index of the max value in that nested column) to select a value from another nested column using that index?

As an example, consider a table with the following schema:

Field name Type Mode id STRING NULLABLE username STRING NULLABLE ▼ products RECORD NULLABLE      ▼ list RECORD REPEATED             item STRING NULLABLE ▼ ordered RECORD NULLABLE      ▼ list RECORD REPEATED             item INTEGER NULLABLE total_orders STRING NULLABLE update_time TIMESTAMP NULLABLE update_id INTEGER NULLABLE

The first few rows look like:

Row id username products.list.item ordered.list.item total_orders update_time update_id 1 1234 a_turing Apple 1 3 2021-08-14 20:03:22.100846 UTC 121231       Orange 0             Pear 2       2 5678 g_hopper Apple 0 2 2021-08-15 09:36:48.220464 UTC 121232       Orange 2             Pear 0       3 1122 a_lovelace Apple 0 1 2021-08-15 13:59:03.441506 UTC 121233       Orange 1             Pear 0       4 3344 v_nabokov Apple 1 2 2021-08-17 17:34:53.415406 UTC 121234       Orange 0             Pear 1      

I want to select the most ordered product for each id's most recent order and exclude orders that don't have a most ordered product (for instance if a customer ordered the same number of Apple, Orange and Pear).

The query I currently use is a chain of CTEs, one for each product type plus an extra column which is the max number of products ordered by each user (max_ordered). I then join together the CTEs using the id column:

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