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Fastest way to check if a string is JSON in PHP?
I need a really, really fast method of checking if a string is JSON or not. I feel like this is not the best way:
30 Answer...
Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
...cloud instances is I redirect port 80 to port 3000 with this command:
sudo iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3000
Then I launch my Node.js on port 3000. Requests to port 80 will get mapped to port 3000.
You should also edit your /etc/rc.local file and add...
The definitive guide to form-based website authentication [closed]
...eartext password ("correcthorsebatterystaple") into a long, random-looking string, which is a lot safer to store in your database. To verify a login, you run the same hash function on the entered password, this time passing in the salt and compare the resulting hash string to the value stored in you...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
... limitation that is usually encountered is the maximum number of file descriptors (sockets consume file descriptors) that can be open simultaneously. This often defaults to 1024 but can easily be configured higher.
Ever tried configuring a web server to support tens of thousands of simultaneous AJA...
C# Stream流使用总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...//读取流中数据把它写到字节数组中
file.Close();//关闭流
string str = Encoding.Default.GetString(array);//将字节数组内容转化为字符串
Console.WriteLine(str);
将数据写入磁盘文件：
FileStream file = File.Open(@"F:\file.txt", FileMode.Append);//初始化文...
Extracting the last n characters from a ruby string
To get the last n characters from a string, I assumed you could use
8 Answers
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Regex for numbers only
...ficulty troubleshooting. I want the regex to match only when the contained string is all numbers; but with the two examples below it is matching a string that contains all numbers plus an equals sign like "1234=4321". I'm sure there's a way to change this behavior, but as I said, I've never really d...
Streaming via RTSP or RTP in HTML5
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Note: although this is not a native support it doesn't require anything extra on user frontend.
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How to calculate age (in years) based on Date of Birth and getDate()
... here. This is the only exactly correct code in this thread without (ugly) string transformations! @Jen It takes the month and day of the DoB (like September 25) and turns it into an integer value 0925 (or 925). It does the same with the current date (like December 16 becomes 1216) and then checks ...
What new capabilities do user-defined literals add to C++?
...roduction of new literal syntax based on existing literals ( int , hex , string , float ) so that any type will be able to have a literal presentation.
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