EMpy | Electromagnetic Python | Data Manipulation library

i'm new to React Native and i was working on a project using api from different url's. When i use the fetch to the url's, i want so set my state with setState but when i try it, the console.warn shows my arrays empy. What is the problem in my code? I appreciate any feedback :)

I have this file https://storage.googleapis.com/johnbalvin/test/test.txt

when I open it on notepad or any editor, it doesn't show any blank space, however when getting it's content through code, it shows an empy space at the beginning.

I would like to know why is this the case

I know this is not a programming in general but rather the file itself, but I'm not sure where to put it

Could some help me please.

Thanks

I'm getting the react error for not passing a unique key to a rendered list.

As far as I can tell, I'm passing a unique key to the outer-level element within the list, so if anyone can identify what the issue is and how to fix it I'd appreciate it.

I suspect it might be the way I'm returning the list. The original array has an empty obj inserted in at pos 1, then when I map over the array I return a component Feed at index 1, and return the original items otherwise. Would the two returns be the issue here?

Any help is greatly appreciated.

I have several checkboxes from bootstrap and I need to get their vaules in my django app. I've tried to read them by using request.GET.get_list but all it does is returning an empy list. POST doesn't work either. Any suggestions?

persl.html:

Making an standalone (non-web) app which utilizes Google Drive API for multi-platform data synchronization. During OAuth2 authentication (oauth2client.tools.run_flow), web browser does not respond (= issue) sometimes after user's consent. (When such issue happens, by refreshing the web page, the authorization is returned with no problem, but I think the user might just feel it is frozen.) This happens for Mac OS Catalina, Windows 10 and iOS 14. Using Python 3.7.6 + Kivy.

I can reproduce my issue even with the standard sample code (The code used here is just a slight modification of Google Drive example on Github, from https://github.com/dtsvetkov1/Google-Drive-sync). In the code,

Suppose I have a list of Strings like this:

["aesfa","gwopq","awefg"]

I would want to get all possible combinations between those Strings, something like this:

["aga","agw","age","agf", ... ,"sga","sgw", ... , "aqf","aqg"]

The strings inside the list have all the same lenght, but could be any lenght, and the list could contain different numbers of strings

I tried the following list comprehensions:

-getCombinations (z:zs) = [x:y | x <- z, y <- zs]

This gives me, obviously, a list of the combinations between all the characters of the first string and the rest of the strings (not the characters).

-getCombinations (z:zs) = [x:y | x <- z, y <- getCombinations zs]

This doesnt work if I dont do a pattern matching for the empy list, I did it like this:

getCombinations [] = []

but doing that make the function return always the empty list no matter what

weirdly enough, if I do:

-getCombinations (z:zs) = [x:[y] | x <- z, y <- head zs]

it gives me the combinations between the first two strings

I tried to extend that to get another String and I ended up with this:

getCombinations (z:zs) = [x:[y]++[w] | x <- z, y <- (head zs), w <- (head(tail zs))]

That gave me the combinations of the first three strings

This question was asked before in a similar way, but not it is not what I am trying to achieve.

I am working with Unity 2019.4.15f1 LTS and I am trying to spawn some obstacles as Game Objects (rocks) in a Vector2 matrix with positions, but at the same time I am also spawning the object player needs to collect. I am trying to create an algorithm so there are not bad spawns such as 3 obstacles in a raw or obstacles with a single space inside them, or even the collectibles behind objects.

EDIT: In the code I am posting, the only thing I am trying to achieve is to avoid spawning 2 rocks with an empty space between them. I only want them to be aligned or distant

The code down here checks if a cell of the matrix generated from a Random.Range is empty and also matching my requirements and if so it spawns the obstacles and collectibles.

I am trying to understand why does inserting the same node twice in a singly linked list causes an infinite loop.

I tried to insert the last node as the new head node. But when I run the code, it's starting an infinite loop I can see since I am calling a method to print nodes at the end. Here's my code.

I want to add a post to my Firestore with a few values a get from the app like the title of the post and the content and it worked. But, when I want to get the user Id -who made that post I get null. So How do I fix this? Also, Would I be able to get the user name instead of the id? I think it would be better that way.

Here is the code: