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Caveats of select/poll vs. epoll reactors in Twisted
... file descriptors that actually have events on them. If you're monitoring 200 file descriptors, but only 100 of them have events on them, then you're (very roughly) only paying for those 100 active file descriptors. This is where epoll tends to offer one of its major advantages over select. If yo...
byte + byte = int… why?
...ack vector.)
EDIT: Raymond is defending, essentially, the approach C and C++ took originally. In the comments, he defends the fact that C# takes the same approach, on the grounds of language backward compatibility.
share
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Download a file with Android, and showing the progress in a ProgressDialog
...onnection();
connection.connect();
// expect HTTP 200 OK, so we don't mistakenly save error report
// instead of the file
if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
return "Server returned HTTP " + connection.getR...
Double not (!!) operator in PHP
...c - It sounds strange, IMO... since operator! is overloadable, using it in C++ would be dangerous. Also you cannot cast structs in C, or use ! with them. Also if something can be negated, you're most likely able to return it from a function returning int, which pretty much makes it a boolean. Are yo...
Virtual Serial Port for Linux
...sing the links posted in the previous answers, I coded a little example in C++ using a Virtual Serial Port. I pushed the code into GitHub: https://github.com/cymait/virtual-serial-port-example .
The code
Why declare a struct that only contains an array in C?
... Unfortunately you can't do if (a == b)!?! how inconsistent that is. For C++ it looks for an == operator. In C it says "invalid operands to binary ==".
– Matt
Dec 22 '11 at 1:43
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How can I implement an Access Control List in my Web MVC application?
...
+200
First part/answer (ACL implementation)
In my humble opinion, the best way to approach this would be to use decorator pattern, Basic...
How does Access-Control-Allow-Origin header work?
...supports OPTIONS HTTP verb, it might return response like below:
HTTP/1.1 200 OK
Date: Wed, 01 Mar 2011 15:38:19 GMT
Access-Control-Allow-Origin: http://DomainA.com
Access-Control-Allow-Methods: POST, GET, OPTIONS, HEAD
Access-Control-Allow-Headers: X-Requested-With
Access-Control-Max-Age: 1728000
...
var functionName = function() {} vs function functionName() {}
...
+200
Here's the rundown on the standard forms that create functions: (Originally written for another question, but adapted after being mo...
How to shuffle a std::vector?
I am looking for a generic, reusable way to shuffle a std::vector in C++. This is how I currently do it, but I think it's not very efficient because it needs an intermediate array and it needs to know the item type (DeckCard in this example):
...