Handmade | A small educational game engine | Game Engine library

Is there a concept for a string-like object in standard library? What I mean is something like

I have a nested cell array which is called values. Description as an image. In this example, there are 5 sub cells. Usually this number is variable from 1 to 30. Each cell has two subsub cells:

1. he first one, or values{5,1}{1,1}, has always only one char value (in this example, TOTAL or MGS)
2. the second one, or values{5,1}{2,1}, has matrix consisting from tow columns: on the left - tempearature values, on the right - physical properties.

My goal is to find the sub cell containing the char value 'TOTAL' (values{5,1}) and somehow to get the index of the matrix (the output would be values{5,1}{2,1})

To adress the challenge, I have written my handmade solution. This code works if there is in the char 'TOTAL' in a{5,1}{1,1} and takes a corresponding value next to 298.15 K. However, the string 'TOTAL' could be elsewhere. In this case, I have a problem. In this solution, the double loop takes long time. So, do you have another solution how to find the index of a cell with 'TOTAL' avoiding loops?

I'm at Jupyter Notebook working with Python.

I'm having trouble using Series.str.extract. Extracting text for a given column when it occurs in another column works smoothly. In the second extraction for which there was no occurrence (match) previously, the script saves the new match but deletes the previous ones, I need both occurrences to be saved, how to solve it?

Below script and example:

TLDR: I read that the "origin" header can be set manually for requests, and that CORS policy are only securing browser requests. how can I make my app securely send data to allowed origins ?

I am making a personal server with express that fetches and deliver data from multiple sources to multiple targets, including a static website

On this api I use a few express routes & socket.io, but to keep it simple i am only going to talk about express routes.

I already implemented CORS policy by adding an Access-Control-Allow-Origin header in the response, but I could read that CORS are not enabled for program or server requests (like curl)

So I added a little logic to check if the "origin" header was in my whitelist, like this :

I'm comunicating a Mitsubshi PLC with a "cheap handmade" HMI that we build in ViualBasic.

I need to track the value of a boolean variable in the PLC memory in my VisualBasic HMI, we achieve this by using an OPC server. No major complications in this step.

Next, I have to write the state of this variable in a SQL Database, when this variable change his state, something like:

I'm trying to show popups on hover for Mapbox markers.

I have tried following the examples and I got it to work to do what I want showing different marker icons based on a class but it's the popups that don't work.

I need to show the popups on the mouse hover of the markers.

I think it has something to do with the data source? Any help would be appreciated. Thanks

My code is as below,

I have a model which was trained on MNIST, but when I put in a handmade sample of an image it raises ValueError: Input 0 of layer sequential is incompatible with the layer: expected axis -1 of input shape to have value 784 but received input with shape (None, 1)

I already checked the input of the model it is in the same shape as MNIST. x_train[0].shape (784,) and my image arr.shape (784,) Please help!

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I have a PublishSubject.

On each new Event I trigger a database query (some locally cached data), then take the result and try to POST it via HTTP request to a server, when this server replies 200 I make another database query to delete the rows that were just sent.

This is done with chaining roughly as so:

I am struggling from the morning with a query. I have the following JSON :