cal | calendar library for dealing with holidays and work days | Calendar library

So I managed to combine Google form, google calendar, as well as google sheets. When people submit the form (with a start date and end date), it will automatically appear in the google sheets as well as google calendar.

I modified the script to find conflict (to prevent double-booking), however, I just realized that even when the same person is trying to edit starting and ending date (via edit response), it will still show CONFLICT.

For example, someone books from date April 15th to April 17th, and he decided to change to April 16th to April 18th, because he previously booked 15-17, his new submission is having conflict with his own previous submission.

How can I add a function that will detect the same email to edit and submit data? (within empty day slot. Thanks in advance!

This is the function to create an object from sheet data

I am trying to store my firebase data in an arraylist and then use it, but when I try to read the arraylist it shows null or only 2 data. Using the Log, I realize that the childEventListener is storing the data one by one and when I read the arraylist it doesn't have all the data. So I need to store all the data first and when the childEventListener finishes read the arraylist.

I need help finding the most efficient way to do this.

This is the code I have: (I have this code snippet written in onCreate).

Here's a codepen demonstrating a treetable with groups:

https://codepen.io/dharmatech/full/mdWGbox

Screenshot of the above treetable:

Only some of the columns are shown; there are many more available. However, note that there is no horizontal scrollbar shown at the bottom to bring the other columns into view.

Is there a way to turn on a horizontal scrollbar?

I've tried each of these:

I'm trying to print a Sorted List and it looks like the list itself is correct- by printing the inner results, but when I try to print the whole list it shows some weird symbols and crashes. Where am I wrong? This is my main with the function I'm calling in "apply":

I don't understand why in Positioned widget, I get an error that child parameter isn't defined as well as in AnimatedContainer the 'duration' parameter isn't defined.

I checked the official documentation first, but don't know why it's not working.

https://api.flutter.dev/flutter/widgets/Positioned-class.html

https://api.flutter.dev/flutter/widgets/AnimatedContainer-class.html

I want to extract the name and d tags for each food item from the xml file.

I thought about making all the d tags to become children of name tag. And then looping over the contents of name. But not sure how to go about that or if there are other more efficient ways. Open to other solutions. I have some code but not there yet. Thank you!

I'm trying to extract UPCs from item descriptions. There is a varying number of /'s in the front of the description, but the UPC is always right before the last /, so I was using a count of characters, however, there is a variable number of characters at the end based on pack size. In the replication, you can see on the first row what this is supposed to look like at the end, but the second row has dropped the first digit of the UPC and picked up the /. Looking for a way to do this inline with DPLYR. My original code is under the replication.

Trying to figure out how I add a shadow to 3 images I have central on my page, looks a little weird without one I believe.

At the moment my HMTL code for this is below:

I am trying to create a function which allows me to have a
dictionary like this :{'Apple': 7,'Pearl: 5, 'strawberry': 3}
using this string: "Apple,2,5;Pearl,3,2;Strawberry,1,2;".

I want to use the numbers on the string as an integer and do the addition process to be the result. However I was trying to split the string into pieces so I can make it an integer