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I am currently on the path of learning C++ and this is an example program I wrote for the course I'm taking. I know that there are things in here that probably makes your skin crawl if you're experienced in C/C++, heck the program isn't even finished, but I mainly need to know why I keep receiving this error after I enter my name: Exception thrown at 0x79FE395E (vcruntime140d.dll) in Learn.exe: 0xC0000005: Access violation reading location 0xCCCCCCCC. I know there is something wrong with the constructors and initializations of the member variables of the classes but I cannot pinpoint the problem, even with the debugger. I am running this in Visual Studio and it does initially run, but I realized it does not compile with GCC. Feel free to leave some code suggestions, but my main goal is to figure out the program-breaking issue.

I have built a webpage that sends the text entered in a form to a Node.js server that synthesizes an audio file speech.wav and stores it in /public folder. When I go to localhost:8000 and the page loads for the first time, I can enter text, submit, and click on the play button to play the correct audio. Script for playing the file is

Have created a map on which have added multiple markers:

I am trying to use Axios to hit my backend (Django), but I am having some trouble setting my global headers to include the CSRF token in the header.

This is reaching my server:

Below I have 2 pieces of code. The purpose of the code is to alternate between showing and hiding an element by clicking on the button.

Logically, I feel both pieces of code are sound and should work in exactly the same way. However, #1 functions as required whilst #2 doesn't. #2 requires 2 presses of the button to first display the element. After that, it functions as required.

I assume I have made a mistake linked to nomenclature, but I am unable to pinpoint it. Please help in doing so.

#1

I'm building a java CLI utility application that processes some data from a file.

Apart from reading from a file, all the operations are done in-memory. The in-memory processing part is taking a surprisingly long time so I tried profiling it but could not pinpoint any specific function that performed particularly bad.

I was afraid that JIT was not able to optimize the program during a single run, so I benchmarked how the runtime changes between the consecutive executions of the function with all the program logic (including reading the input file) and sure enough, the runtime for the in-memory processing part goes down for several executions and becomes almost 10 times smaller already on the 5th run.

I tried shuffling the input data before every execution, but it doesn't have any visible effect on this. I'm not sure if some caching may be responsible for this improvement or the JIT optimizations done during the program run, but since usually the program is ran once at time, it always shows the worst performance.

Would it be possible to somehow get a good performance during the first run? Is there a generic way to optimize performance for a short-running java applications?

I have an AWS glue job with Spark UI enabled by following this instruction: Enabling the Spark UI for Jobs

The glue job has s3:* access to arn:aws:s3:::my-spark-event-bucket/* resource. But for some reason, when I run the glue job (and it successfully finished within 40-50 seconds and successfully generated the output parquet files), it doesn't generate any spark event logs to the destination s3 path. I wonder what could have gone wrong and if there is any systematic way for me to pinpoint the root cause.

I'm using Inno Setup for my installation and am adding the following function to the existing [Code] section:

I am building a CV creator in React. I have a form, a preview component and their closest parent component is Main. What I want to achieve is that when a user is typing inside form fields, the preview fields on the right get automatically updated with data from form but I just can't get it to work. This is my first project in React, and I cannot use hooks or functional components. I know that I am doing something wrong, but cannot pinpoint what.

Main component