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How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
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You will find it by reading the couple of pages of Muthukrishnan - Data Stream Algorithms: Puzzle 1: Finding Missing Numbers. It shows exactly the generalization you are looking for. Probably this is what your interviewer read and why he posed t...
Can I browse other people's (Apple) bug reports? [closed]
...see the bugs that other people have reported to Apple. However, I recently read that Apple uses multiple bug reports for the same issue as an indicator of the severity or priority of a bug or request (see this blog post). So while I generally agree with you that it's better to search first and try t...
Convert a Unicode string to a string in Python (containing extra symbols)
...This raw string of bytes can be written to a file. However, note that when reading it back, you must know what encoding it is in and decode it using that same encoding.
When writing to files, you can get rid of this manual encode/decode process by using the codecs module. So, to open a file that en...
SOAP vs REST (differences)
I have read articles about the differences between SOAP and REST as a web service communication protocol, but I think that the biggest advantages for REST over SOAP are:
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Dump a NumPy array into a csv file
...rray into a CSV file? I have a 2D NumPy array and need to dump it in human-readable format.
11 Answers
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What's the key difference between HTML 4 and HTML 5?
...ure after HTML has died as a document format, historians may still want to read our documents, and having a completely defined parsing algorithm will greatly aid this.
Better Web Application Features
The secondary goal of HTML5 is to develop the ability of the browser to be an application platform...
Difference between List, List, List, List, and List
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1) Correct
2) You can think of that one as "read only" list, where you don't care about the type of the items.Could e.g. be used by a method that is returning the length of the list.
3) T, E and U are the same, but people tend to use e.g. T for type, E for Element, V...
Turn a simple socket into an SSL socket
...;
SSL_set_fd(cSSL, newsockfd );
//Here is the SSL Accept portion. Now all reads and writes must use SSL
ssl_err = SSL_accept(cSSL);
if(ssl_err <= 0)
{
//Error occurred, log and close down ssl
ShutdownSSL();
}
You are then able read or write using:
SSL_read(cSSL, (char *)charBuffer, nB...
How the single threaded non blocking IO model works in Node.js
I'm not a Node programmer, but I'm interested in how the single threaded non blocking IO model works.
After I read the article understanding-the-node-js-event-loop , I'm really confused about it.
It gave an example for the model:
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