dev Kwan

I am getting confused on how async-await function does not block operation let say I have a function named foo,I want to make the statement console.log('done') can execute wi...

The vue component has 2 async functions to fetch data look like this async getName() { let res = await fetch(xxx) res = await res.json()} return res;} async getAddr(){ let r...

Anyone family with Cpython internal? I want to rewrite a function from Python in C, because that function is really slow from being executed in Python. Supposed a shared libr...

My SPA has a task that needs to take a long time to finish. When user clicks the submit button, fire the backend starts processing the job. At the same time, in client side, t...

Question about multiprocessing How can I determine the optimal number of subprocesses. Consider this scenario A web scraping application crawl 100K URL that stored in a thread...

What is the optimal number of threads that can be created for a X cores machine? Any formula? Googled it but not getting the answer, What I am doing is to crawl data from hund...

How to link to a shared object library where locates at project path in codeblock? Scenario is that library was compiled in Golang The output has a header file and a so file ...

Any hooking framework in C/C++? I want to add a callback specifically a logging function when a process being killed on my program on Linux. Look like I need to intercept the ...

I want to make a custom error page if the browser received 404 sent by web server and php script My project struct looks like following: test is an empty folder .htaccess ....

Just curious why some libraries are just a single all-in-one header file which includes header signatures and implementation(using macro) I found it’s really convenient, for p...

Are there process hacker like software on Linux? so that I can do something like this View system process and thread basic information. Detect hidden processes,threads,proces...

I am getting confused with the stack frame. Here, From my understanding, the current function stack frame grows 4 bytes because stack pointer move forward 1 step. So, the size...

Just curious, why the set of java api can run on both Linux, windows and mac, But in C++, it’s also a cross platform language, but why some api not working on Linux?

Guys, what's the best practice to handle cross process communication? I have a small service which depends on another executable binary helper process written in C++. I need t...

Guys I am going to implement a function to calculate services usage, such as how many times the QR code is scanned , The number of times should be stored in a table , each ti...

Any keyword I can google it?

Is it a good decision to make raspberry pi running as a home web server for 7x24 long time support ? I don't want to buy a cloud server, because the tasks I do is really high ...

Anyone has experience on turning node? I have express.js running on windows server 2016 It works fines for serving 1 millions requests under 1000 concurrent connections The p...

- async/await is 1, 2, 3 also but it waits for the fetch to finish and saves the received response in res Supposed I have DOM related operations need to be executed while wa...