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I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);.

Need help. Already 4 days nothing happens. Trying to do a SQLite database search. How to make it so that the listview is not displayed immediately, but only when the user enters a search query? That is, the data from the database was not filtered, but matches appeared in the listview when the user enters a request. I am very grateful to everyone in advance!`

I am running the following in my React app and when I open the console in Chrome, it is printing the response.data[0] twice in the console. What is causing this?

Would be great if someone can help me understand how flock functions. Lets says I have the below scenario:

I want save photo and add name of file and text of message to database.(Also in this database I have status of request and user, how make request, this 2 columns works ok)

Database:

I'm trying to read a file with this argument {year} inside it.

Inside this file there is this string: SELECT * FROM TABLE WHERE YEAR = {year}

I'd like to read this file with Python f-strings to use the query after.

The expected result looks like this: SELECT * FROM TABLE WHERE YEAR = 2019

I tried this:

I am new in Python, I would like to ask how can make my code work. in login() function, if the username and password are correct, log = True, then when go to main() function, log variable is not defined.

Then i found online where add log = login() in main() function, like this

I understand that after calling fork() the child process inherits the per-process file descriptor table of its parent (pointing to the same system-wide open file tables). Hence, when opening a file in a parent process and then calling fork(), both the child and parent can write to that file without overwriting one another's output (due to a shared offset in the open-file table entry).

However, suppose that, we call open() on some file after a fork (in both the parent and the child). Will this create a separate entries in the system-wide open file table, with a separate set of offsets and read-write permission flags for the child (despite the fact that it's technically the same file)? I've tried looking this up and I don't seem to be able to find a clear answer.

I'm asking this mainly since I was playing around with writing to files, and it seems like only one the outputs of the parent and child ends up in the file in the aforementioned situation. This seemed to imply that there are separate entries in the open file table for the two separate open calls, and hence separate offsets, so the slower process overwrites the output of the other process.

To illustrate this, consider the following code:

I am trying to check if the value in 'diff' column is greater than 0 if it is, then the value in 'worth' should be False else it should be True

I am using the below code to compute and check but it always gives me True. Can anyone point here what is the mistake. I am attaching pic of output as well