aterm | It records your terminal , then lets you upload to ASHIRT

Say that I have got a GADT like this:

I would like to parse arithmetic expressions.

Here is my current parser:

I am using Spring to manage my controller instances using setControllerFactory (see below), to enable the controller to care for the persistence of the entities by autowiring a EntityManagerFactory and handling of database transactions. This approach works fine with a couple of other controllers I developed so far. However, lately I wanted to extend the functionality and copied an existing working controller scaffold, adopted it to a different Entity with the according FXML UI. For whatever reason I can’t make it work. What happens is that the controller gets instantiated and the controllers initialize method is called without any of the declared FMXL members being injected upfront – I debugged it, they are all null. Therefore initialize throws a NullPointerException. If I comment the setControllerFactory line out and all persistent related commands, it works fine, but I have no persitence. I spent an hour to compare the working examples with the new one but can’t find the root cause.

Please find following the code snippets

The entity class

For my assignment I need to create a Polynomial Class using an ArrayList that consists of Term's (a class that we created earlier in the class, ex: 7x^5). I need to make it so that when the terms are inserted into the ArrayList they are sorted in descending order.

Here is my code:

I would like to parse a basic indented language using Megaparsec. Originally I was using Parsec which I managed to get working correctly with indentation but now I'm having quite some trouble.

I've been following a tutorial here and here's the code I have to parse a language ignoring indentation.

I have a variable (aTerm) which contains an 8 digit random number which im using to uniquely identify each individual line of a csv file.

Here is the code I wrote to remove the line which has the corresponding number:

I have a string of JSON that I'm trying to convert into a list. There is an empty array value which is breaking the deserialization (have tried removing it manually or changing to a number and it works). Was thinking I could try to replace the [] in the string, but is there a better way to work around this?