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Rails 4: before_filter vs. before_action
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523
As we can see in ActionController::Base, before_action is just a new syntax for before_filter.
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How do I parse JSON with Objective-C?
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Cœur
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answered Oct 17 '11 at 13:35
TommyTommy...
Maximum concurrent Socket.IO connections
...t I made, similar to the test I used: https://gist.github.com/jmyrland/5535279
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Call static method with reflection
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answered Aug 10 '12 at 19:39
LeeLee
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Why does the JVM still not support tail-call optimization?
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32
+50
Diagnosin...
What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
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edited Oct 20 '14 at 15:32
Liam
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Learning Ant path style
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edited Jun 20 at 9:12
Community♦
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answered Mar 25 '14 at 13:30
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
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(For information about the new exception helper in Visual Studio 2017 see the end of this answer)
Consider this code:
String s = null;
Console.WriteLine(s.Length);
This will throw a NullReferenceException in the second line and you want to know why .NET doesn't tell you that it was s...
Difference between matches() and find() in Java Regex
... Pattern p = Pattern.compile("\\d\\d\\d");
Matcher m = p.matcher("a123b");
System.out.println(m.find());
System.out.println(m.matches());
p = Pattern.compile("^\\d\\d\\d$");
m = p.matcher("123");
System.out.println(m.find());
System.out.println(m.matches());
}
/* out...