Codec | Android encoding and decoding library by c

i have an error that i just dont find a solution for. I created a little messenger thingy in flutter and have a problem when using a NetworkImage inside one of my chat bubbles.

When i send the image as message, it is displayed without problem in the bubble. Also when i send multiple images, it is no problem and they extend beyond the screen and i can just scroll up and down without any problems.

Though when i reopen the room screen and there are multiple images and they extend over the visible screen i get _CastError (type 'Null' is not a subtype of type 'List' in type cast) from network_image dart file. BUT this only happens after a hot restart. If i just navigate back and then reopen the room screen its also all fine, but as soon as i hot restarted once i always get the error when trying to open a room, which has images extending the visible space.

Iam still kinda new to flutter, so i know my code sucks mostly but this time i just dont even find a "dirty" way to solve it.

Flutter 2.2.0 (beta channel)
Dart 2.13.0 On Android Emulator Pixel 4a API 30

Edit 1: i removed a lot to make it easier to read.

Edit 2: i found it to be somehow connected to using the downloadURL from Firebase Storage. When i replace the url with just some test png url it doesnt seem to be a problem.

I have an Eclipse application which on execution giving below error -

Is a simple way to convert pdf to html using pdfminer? I have seen many questions like this but they won't give me a right answer...

I have entered this in my ConEmu prompt:

According to Wikipedia, the ASCII is a 7-bit encoding. Since each address (then and now) stores 8 bits, the extraneous 8th bit can bit used as a parity bit.

The committee voted to use a seven-bit code to minimize costs associated with data transmission. Since perforated tape at the time could record eight bits in one position, it also allowed for a parity bit for error checking if desired.[3]:217, 236 §5 Eight-bit machines (with octets as the native data type) that did not use parity checking typically set the eighth bit to 0.

Nothing seems to mandate that the 8th bit in a byte storing an ASCII character has to be 0. Therefore, when decoding ASCII characters, do we have to account for the possibility that the 8th bit may be set to 1? Python doesn't seem to take this into account — should it? Or are we guaranteed that the parity bit is always 0 (by some official standard)?

If the parity bit is 0 (default), then Python can decode a character ('@'):

So I tried to read the file and encrypt its content with cryptography.fernet but sometimes the file contains characters that can't be encrypted by whatever algorithm is being used in this library. I also tried a library called pyAesCrypt which has this function: pyAesCrypt.encryptFile("data.txt", "data.txt.aes", password). But it also can't encrypt some file types like gifs. I don't know much about the encryption algorithm happening in the background, but is there any way I can encrypt all files no matter what characters they contain? Or maybe encode them first to get rid of these characters then encrypt them? I'm just giving ideas based on the small knowledge I have about this topic.

The code I tried with Fernet library:

i searched already in Stack Overflow, but i was not able to get the Answer i searched for. I am currently developing a Remote Control App with WebRTC.

I played around with the WebRTC Settings. Like Resolution, Bitrate, Codec. But after a bit of trying, my experience was that it works best when i leave the default Settings.

I want to ask what the best Settings are for the lowest Latency possible. The Quality is not really important. The Resolution could also be changed.

i have the following Settings in Mind:

I have made a Python script whose task is to take a video file and split it up into separate videos of 60 secs each. Here's the code.

I want to send data from from to another one

I'm new in qt i googled my problem and find many solution but no one focused one qstring value

login.cpp

This question is off the back of a previous question I asked here a few days ago. One of the comments was that I should dispense with the Ring middleware for extracting query parameters and write my own. One alternative that I thought I'd play with was harnessing the existing one to get what I want and I've been doing some digging into the Ring source code. It does almost exactly what I want. If I write out how I understand it works:

1. A middleware has the function wrap-params which calls params-request
2. params-request adds a params map to the request map, calls assoc-query-params
3. assoc-query-params eventually calls ring.util.codec/form-decode on the incoming query string to turn it into a map
4. form-decode uses assoc-conj to merge values into an existing map via reduce
5. assoc-conj's docstring says

Associate a key with a value in a map. If the key already exists in the map, a vector of values is associated with the key.

This last function is the one that is problematic in my previous question (TL;DR: I want the map's values to be consistent in class of either a string or a vector). With my object orientated hat on I would have easily solved this by subclassing and overriding the method that I need the behaviour changed. However for Clojure I cannot see how to just replace the one function without having to alter everything up the stack. Is this possible and is it easy, or should I be doing this another way? If it comes to it I could copy the entire middleware library and the codec one, but it seems a bit heavyweight to me.