explain | Transform postgresql explain to a graph

I was reading this code (source):

I am trying to use next-firebase-auth package to manage authentication in my next js app. Before messing around, I wanted to run the example. However, I could not find proper explanation for the fields required in the .env file.

Could you please explain what should be the values of following fields in local.env file here

• COOKIE_SECRET_CURRENT
• COOKIE_SECRET_PREVIOUS
• NEXT_PUBLIC_FIREBASE_PUBLIC_API_KEY

The last one I guess is the Web API key shown on the config page. Not sure, please confirm.

I had to delete my git branch and now need to fetch that remote branch.

I did the following steps as I've seen someone's post here.

I know that to make an image responsive but not scaled up beyond its original size, all we have to do is setting max-width: 100%. But I am not sure why that setting works because literally it just tell the browser the image cannot exceed the width of the parent container, instead of the original image size. Could anyone please explain the reasons behind?

I have a data frame including three columns named 'Altitude', 'Distance', 'Slope'. The column of 'Slope' is calculated using the two first columns 'Altitude', 'Distance'. @ the first step the purpose was to calculate 'Slope' using a condition explained below: A condition function was deployed to start from the top column of the "Distance" variable and add up (sum) values until the summation of them is greater or equal to 10 (>=10). If this condition corrects then calculate the "Slope" using the given formula: Slope=Average(Altitude)/(sum(Distance)). The summation of the 'Distance' was counting from the first value of that to the index that the 'Distance' has stopped there). The following code is for the above explanation (By Tim Roberts):

While studying OpenCV, I realized that whenever I blend two images the colors of scr2 have changed in some way(depends on the colors of scr1).

I know this is not an informative and clear way to explain my issue, however; I don't know how to describe this issue since I have no expertise with colors so I would like to show you what I meant with images and code.

The input image: Input image

After looking at several posts here, every post explains how to replace yes/no in a column with 1/0, but the datatype of those numbers remain 'object' and is not float or int (even after I use astype(int)), so I can't do further operation with them. My code is below. Anyone knows how to convert datatype now from object to float or int?

the swiftui code below should apply the sephia.tone filter to the current photo, to do it I used the code below but the filter is not applied, can anyone explain to me where the problem is? when I click on sepia I make the call to the function that applies the CiFilter,what is this due to? because the filter is not applied correctly

Swift UI Code:

I have a text file called listofhotelguests.txt where hotelguests are stored line by line with their first names separated by && as a delimiter. Can someone explain how I can have my Python program read it so it associates john with doe, ronald with macdonald, and george with washington?

My expected outcome I'm hoping for is if I prompt the user for their lastname to make sure their a valid guest on the list, the program will check it against what it has in the file for whatever the firstname they entered earlier was.

So if someone enters george as their first name, the program retrieves the line where it has george&&washington, prompts the user to enter their lastname and if it doesn't match what it has, either say it matches or doesn't. I can figure the rest out later myself.

Assuming there is nobody with the same names.

I know I have to split the lines with &&, and somehow store what's before && as something like name1 and whats after && as name2? Or could I do something where if the firstname and lastname are on the same line it returns name1 and password1?

Not sure on what to do. Python is one of my newer languages, and I'm the only CS student in my family and friend groups, so I couldn't ask anybody else for help. Got nowhere by myself.

Even just pointing me in the direction of what I need to study would help immensely.

Thanks

Here's what the text file looks like: