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I have an array like this

I'm trying to use a for loop through iterate through a range of dates, and I was going to increment the start date using plusDays, but I get "cannot resolve method plusDays in Date". Here is my code:

trying to unload data from a huge table, below is the command used and output.

$ /home/cassandra/dsbulk-1.8.0/bin/dsbulk unload --driver.auth.provider PlainTextAuthProvider --driver.auth.username xxxx --driver.auth.password xxxx --datastax-java-driver.basic.contact-points 123.123.123.123 -query "select count(*) from sometable with where on clustering column and partial pk -- allow filtering" --connector.name json --driver.protocol.compression LZ4 --connector.json.mode MULTI_DOCUMENT -maxConcurrentFiles 1 -maxRecords -1 -url dsbulk --executor.continuousPaging.enabled false --executor.maxpersecond 2500 --driver.socket.timeout 240000

This is a separate class for SecureStorage which I have created.

I recently got an assignment that tasks me to create a class which contains private variables and member functions/void functions. Classes have just been introduced to me and my teacher gave me an assignment that I don't really understand. The issue I'm having is that the average and letter grade aren't correctly being outputted as shown below. Everything has to take place within the member functions. Also, am I using the member functions correctly? I've seen online that they are being defined within the class but in my notes I see that they are referenced and treated just like a user defined function. The confusion I'm having is this part of the assignment:

member functions to set each of the member variables to values given as an argument(s) to the function, member functions to retrieve the data from each of the member variables, a void function that calculates the student’s weighted average numeric score for the entire course and sets the corresponding member variable, and a void function that calculates the student’s final letter grade and sets the corresponding member variable

My code is below:

I am using scipy cubic spline ("scipy.interpolate.CubicSpline") for 1-dimensional interpolation. I would like to specify the initial and final derivatives (the "boundary conditions", "bc_type" if I'm not mistaken) for each segment of the spline. However, reading the documentation and looking for examples, I can't understand how that would happen (I am assuming it's possible)

E.g, if I have 4 point to interpolate, I expect to have 3 segments, for each of which I should be allowed the initial and finale first order derivative. However, the only syntax accepted is something like the following:

I'm trying to call several modules that are set up to send an email to specified users who are listed in a table using a function. The logic that the emails follow are supposed to be setup to email each user after 7 days contingent upon the preceding date that they were emailed previously (FirstEmailDate, SecondEmailDate, ThirdEmailDate, and FinalEmailDate). I'm having a hard time with that logic, searching each row of the entire table, and being able to automatically add a date and timestamp to the fields for each email date. Any help with this coding would greatly appreciated. Thank you

Below is just one module as an example:

my goal is to replace the characters of a sentence with those found in a certain number of positions (provided in input) later in the alphabet. A kind of encryption. My problem is if in the sentence there is a Z or some character that exceeds the maximum size of the array. How can I make sure that if someone (for example) writes Y and moves it by 3 characters, the value will be B?