Kling | show keyboard keys visually on the Windows screen | Keyboard library

I have the following:

I have many records of data for email, now I want to check if I have duplicate names with same mail id and check if duplicate names exist before @ in email . i am trying below approach but not working for me. also I have NA and blank cells i also want to ignore those.

first I want to check if another mail ID exist with the same name. second i want to check if there is duplicate names exist in mail column (for example name in kling.mark@tttt.com if we have another mail id with kling mark)

I have an issue where I want to get a value from my Firestore database and store it to a variable. All this process should happen inside a function. However, when I try to return the result and call the function I get undefined in the console. But if I try console.log the value instead of returning I actually get the result that I want in the console?

I did my research and I found out that I have to do with asynchronous request. I read this particular answer https://stackoverflow.com/a/14220323/13540535 but I was not able to implement the solutions that Mr. Felix Kling told us.

How can I solve this and where in my code should I use async/await ?

First, here is my Firestore database:

And here is my code where I get undefined:

I have two data frames and i am trying to validate if names in both the data frames are consistent for city in "CY". considering unique id "id" and "code" between them.but i am getting error.

i am giving required input parameter for user to give. then on the basis of those column name.

Objective is to check if names are blank in df8 and also check if names are consistent with df9 for city in CY

ANSWER CODE BELOW:

Poking around the internet I see functions that get me part of the way to what I need. However, I am trying to make this more dynamic.

Original array:

I have a array of objects as a json file, I used the objects to display them on the list, When getting to details of that item it has a related items also. I want to show related items for this item Heres the json file

I need help with Javascript Promises.

The buttons - is a NodeList. I get it from puppeteer (API).
I need a list of the buttons with a specific text.
I transform buttons to array of real buttons (page.evaluate API link):

• I map through the array,
• Convert it to a button,
• Check the text and return null if the text isn't what I need
• I console.log the button text - and it shows me the text I need - so it's all good.
• Then I increment counter
• And return the converted button.

After that I filter the array - checking for not null elements. I expect that goodButtons would contain only the buttons I need - with the correct text.

But the output is