rgx | React grid system based on minimum and maximum widths | Grid library

I am pulling data from a printable PDF using iTextSharp. This is the text that I have extracted:

I am trying to learn some .net6 and c# and I am struggling with regular expressions a lot. More specificaly with Avalonia in Windows if that is relevant. I am trying to do a small app with 2 textboxes. I write text on one and get the text "filtered" in the other one using a value converter. I would like to filter math expressions to try to solve them later on. Something simple, kind of a way of writing text math and getting results real time. I have been trying for several weeks to figure this regular expression on my own with no success whatsoever. I would like to replace in my string "_Expression{BLABLA}" for "BLABLA". For testing my expressions I have been checking in http://regexstorm.net/ and https://regex101.com/ and according to them my matches should be correct (unless I misunderstood the results). But the results in my little app are extremely odd to me and I finally decided to ask for help. Here is my code:

I am using this regex pattern (\[|)(\w\w \d*)(\; |\*|\s|]?, )((\"(\w)\"|\((.\w)\))|)(\]|)|(\[\w\w \d\]) to match the below string:

Got an issue. Need to put full name from array as ID of LI element. ATM it takes only first word for some reason.could you help?

In .NET 6, I fiddled with the new startup class somehow I do not get a swagger json outputted (so the swagger ui fails). Probably there is somewhere a mistake but as far as I understand this should be it.

Here i want to fill input value starting with value "-", it works if start value is number and then add last "-" to value, but here i want input value "-" at start and not "NaN" at time input "-"

This is my code sample :

I'm having an issue with the edges function of helpers.c

It generates the "right" image, but check50 fails all checks related to it

I tried creating a larger images with a black frame and then inserting the smaller image in the center of it, so when the program does the calculations for GX and GY it just uses that

check50 link for reference: "https://submit.cs50.io/check50/87cfe472a6c49c1f212f91ac346ea1bb532806eb"

generated image

my code:

I am writing an input field sanitizer function that should check whether that input value is decimal or not.

Test cases:

• 1234 - true
• 12.34 - true
• 0.123 - true
• 000045 - true
• 000.45 - false
• .45685 - false
• 5..454 - false
• 55874. - true
• 000000 - true
• 0.0. - false

I don't want to show a validation error, I just want to prevent users from typing a wrong decimal value.

This regular expression /^[0-9]+\.?[0-9]+/ covers all the cases besides the 5th point. I guess here the only method to use is String.prototype.replace() in order to cut the unwanted wrong characters.

P.S. This validation is quite similar to HTML input type number native validation, except the 5th point, which is accepted as a valid number type.

UPDATED!

I am trying to count how many phone numbers within my csv file start with the numbers "123", "456", and "789", in three different columns.

I initially approached this with RegEx: