data-structure | various Data Structure C/C codes | Natural Language Processing library

I am trying to strip away do notation in the Database.sh file from https://haskell-at-work.com/episodes/2018-01-19-domain-modelling-with-haskell-data-structures.html

But I am having an Error and I have no Idea why. (Probably just means I don't know about Haskell)

here data1 and order of content get changed everytime that why I used switch statement I am running a function by passing value like this

Hello to all i have this data structure that i need to group and if there are any duplicates to convert those two objects it in one line..

Data Structure

Previous questions which I could not use to get this to work

Recursive grammars in FParsec

• Seems to be an old question which was asked before createParserForwardedToRef was added to FParsec
• AST doesn't seem to be as horribly recursive as mine.

Parsing in to a recursive data structure

• Grammar relies on a special character '[' to indicate another nesting level. I don't have this luxury

I want to build a sort of Lexer and project system for a language I have found myself writing lately. The language is called q. It is a fairly simple language and has no operator precedence. For example 1*2+3 is the same as (1*(2+3)). It works a bit like a reverse polish notation calculator, evaluation is right to left.

I am having trouble expressing this in FParsec. I have put together the following simplified demo

Suppose that I have implemented two Python types using the C extension API and that the types are identical (same data layouts/C struct) with the exception of their names and a few methods. Assuming that all methods respect the data layout, can you safely change the type of an object from one of these types into the other in a C function?

Notably, as of Python 3.9, there appears to be a function Py_SET_TYPE, but the documentation is not clear as to whether/when this is safe to do. I'm interested in knowing both how to use this function safely and whether types can be safely changed prior to version 3.9.

I'm writing a Python C extension to implement a Persistent Hash Array Mapped Trie (PHAMT); in case it's useful, the source code is here (as of writing, it is at this commit). A feature I would like to add is the ability to create a Transient Hash Array Mapped Trie (THAMT) from a PHAMT. THAMTs can be created from PHAMTs in O(1) time and can be mutated in-place efficiently. Critically, THAMTs have the exact same underlying C data-structure as PHAMTs—the only real difference between a PHAMT and a THAMT is a few methods encapsulated by their Python types. This common structure allows one to very efficiently turn a THAMT back into a PHAMT once one has finished performing a set of edits. (This pattern typically reduces the number of memory allocations when performing a large number of updates to a PHAMT).

A very convenient way to implement the conversion from THAMT to PHAMT would be to simply change the type pointers of the THAMT objects from the THAMT type to the PHAMT type. I am confident that I can write code that safely navigates this change, but I can imagine that doing so might, for example, break the Python garbage collector.

(To be clear: the motivation is just context as to how the question arose. I'm not looking for help implementing the structures described in the Motivation, I'm looking for an answer to the Question, above.)

As seen in Find the memory size of a set of strings vs. set of bytestrings, it's difficult to precisely measure the memory used by a set or list containing strings. But here is a good estimation/upper bound:

I know about ts-ast-viewer but I don't know how they extract list of elements from the union.

I have tried several existing solutions, including this and it seems that most of them are obsolete. Some ts.[methods] are deprecated now.

This is initial code to start debug compiler API:

I am currently working on my Portfolio Website and i need to setup my data-structure. So, i have numerous "projects" that consist of: Title, Description and a number of Images to every project.

What my Data looks right now:

I am trying to implement an n-arry tree based on this post : [here][1] and I am getting an error when trying to define a function that adds children: