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Django: Get an object form the DB, or 'None' if nothing matches
Is there any Django function which will let me get an object form the database, or None if nothing matches?
8 Answers
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In java how to get substring from a string till a character c?
I have a string (which is basically a file name following a naming convention) abc.def.ghi
9 Answers
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ASP.NET MVC: Custom Validation by DataAnnotation
...gthAttribute(int minLength, params string[] propertyNames)
{
this.PropertyNames = propertyNames;
this.MinLength = minLength;
}
public string[] PropertyNames { get; private set; }
public int MinLength { get; private set; }
protected override ValidationResult IsVa...
Knight's Shortest Path on Chessboard
...re all available moves are connected (value=1), and unavailable moves are disconnected (value=0), the sparse matrix would be like:
(a1,b3)=1,
(a1,c2)=1,
.....
And the shortest path of two points in a graph can be found using http://en.wikipedia.org/wiki/Dijkstra's_algorithm
Pseudo-code from wi...
Port 80 is being used by SYSTEM (PID 4), what is that?
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the IP adress is 0.0.0.0, state = LISTENING: means that port 80 is listening to all interfaces (not used)
How to read NETSTAT -AN results:
https://sites.google.com/site/xiangyangsite/home/technical-tips/linux-unix/networks-related-comma...
What is “(program)” in Chrome debugger’s profiler?
What is “(program)” in the function column of the Chrome debugger?
3 Answers
3
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How to convert a byte array to a hex string in Java?
I have a byte array filled with hex numbers and printing it the easy way is pretty pointless because there are many unprintable elements. What I need is the exact hexcode in the form of: 3a5f771c
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How do I check if file exists in jQuery or pure JavaScript?
How do I check if a file on my server exists in jQuery or pure JavaScript?
17 Answers
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Converting int to bytes in Python 3
I was trying to build this bytes object in Python 3:
13 Answers
13
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android EditText - finished typing event
I want to catch an event when the user finishes editing EditText.
14 Answers
14
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