Module development and code questions

To update a lot of old URL aliases and do them with the new format, you would run the following code:

Hello,

I need to have a hint for a Drupal 8 module(s) development that I try to do.

I will present here a quick overview and then I will stick to the problem I have.

Now i want that name is a varchar(255) so i created a hook to update in mymodule.install

Buenas noches estoy usabdo commerce 2 y drupal8 y quisiera saber si existe algun metodo para enviar la factura del pedido del cliente por email igual que lo hace ubercart???

i am beginner at Drupal 9, I am using Durpal 9, how can i create module content type news , with fields title, body,image and rank. Rank is integer number, and bigger number in field rank put news first. I have to create module from scratch. Which function i need to use, what code, is there any example like this?

When creating a custom form, I learned that adding a service to a form via dependency injection should be done like the below using the constructor....