All Questions
24,211,489
questions
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How to integrating Morefun(Mf919) POS SDK with Flutter
I am trying to integrate Morefun(Mf919) POS SDK with Flutter using Java code but the POS device is not connected and throws error:
Error: Device service connection failed, please try again later.
...
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2
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Function to unzip .zip file in Python not working
I have this function which is supposed to take a .zip file, unzip it, and put the files in the same directory where the .zip file was originally located:
def unzip_file(file_path):
print(f&...
- 11
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4
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Why is my program returning Nan for some values and not others?
In Algorithms 4th Edition (Sedgewick) there is a question I have been attempting. I have limited knowledge in maths and way out of practice, however I was using this thread as I was having a hard time ...
- 23
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Spring Database Initialization missing first INSERT statement
I have a simple Spring app, which when I start I want to have my data in it. I wanted to try https://docs.spring.io/spring-boot/how-to/data-initialization.html
This is my application.yaml file
spring:
...
- 3
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6
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How do I pass a parameter pack to a std:tuple?
This is a simple question, yet the Internet offers no answer or examples to this one:
what is the correct means of passing a parameter pack to a std::tuple? I have tried the following, only to find I ...
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3
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Why does this use of css mask bring about random graphical glitches?
Why am I sometimes getting this graphical glitch on the edges of my div? You can see it in the image bellow, the 1px wide vertical line on the right of the element. This sometimes appears, on the left ...
- 5,349
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3
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Overload signature is not compatible with its implementation
How can i achieve this?
function uwu(c: (a: number) => number): void;
function uwu(c: (a: string) => string): void;
function uwu(c: (a: string | number) => string | number): void {
console....
- 13
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4
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How to filter entity based on non-assosiated entity in sequelize
I can't filter Kase based on non-assosiated KaseColorLocation inStock property.
Kase entity belongs to many Color through KaseColor
Color entity belongs to many Kase through KaseColor
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3
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Cannot get Log Reader Agent to run on Azure SQL Managed Instance
I configured Azure SQL Managed Instance for transactional replication, it is a publisher with local distributor. I go it set up and the snapshot agent runs successfully, but the log reader agent is ...
- 3,985
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4
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Can undefine a symbol defined by ffi.cdef in Luajit?
Well, I've been reading Luajit ffi's documents for several days and knew how to use it basically.
Define symbols(ffi.cdef(xxx)),
then load libraries(a = ffi.load(xxx)),
and simply call them(a.xxx(...))...
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4
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Arduino serial read
char received[16];
void setup() {
Serial.begin(9600);
}
void loop() {
int bytesRead = 0;
if (Serial.available()) {
delay(3); //delay to allow buffer to fill
int bytesRead = Serial....
- 2,870
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votes
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answers
2
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Why use @OneToOne, @OneToMany, @ManyToOne annotations instead of using a service?
I want to open the can of worms with this because I see that everyone does it their own way. When we learn the theory we all learn it the same way right? Or has it changed in the last 20 years? No ...
- 11
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answers
5
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FastAPI in docker compose fails OPTIONS due to CORS for a React App on the same network
I am trying to make a "POST" request from a React frontend to a FastAPI app living in the same docker compose. Both containers are connected to the default compose network. The preflight ...
- 15
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10
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App content vertically centered, BUT WHY?
I'm working on a React application where I have a fixed header at the top of the page. Below the header, I have a content area that should start immediately after the header. However, the content ...
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4
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Has anyone been able to use values regexp_like in partitioning by list in Oracle 19c?
I am attempting to partition a table based on a varchar2 column. I would like to partition it by 1) all alpha characters, 2) all numeric characters and 3) both alpha and numeric characters.
column to ...
