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Test for existence of nested JavaScript object key
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You have to do it step by step if you don't want a TypeError because if one of the members is null or undefined, and you try to access a member, an exception will be thrown.
You can either simply catch the exception, or make a function to ...
How to dynamically create a class?
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Yes, you can use System.Reflection.Emit namespace for this. It is not straight forward if you have no experience with it, but it is certainly possible.
Edit: This code might be flawed, but it will give you the general idea and hopefully off to a good start towa...
Get name of object or class
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Get your object's constructor function and then inspect its name property.
myObj.constructor.name
Returns "myClass".
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how to get GET and POST variables with JQuery?
How do I simply get GET and POST values with JQuery?
14 Answers
14
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Rename Files and Directories (Add Prefix)
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Thanks to Peter van der Heijden, here's one that'll work for filenames with spaces in them:
for f in * ; do mv -- "$f" "PRE_$f" ; done
("--" is needed to succeed with files that begin with dashes, whose names would otherwise be interpreted as switches for the mv command)
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AttributeError: 'module' object has no attribute 'tests'
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I finally figured it out working on another problem. The problem was that my test couldn't find an import.
It looks like you get the above error if your test fails to import. This makes sense because the test suite can't import a broken test...
How to throw std::exceptions with variable messages?
...r() << foo << 13 << ", bar" << myData); // implicitly cast to std::string
throw std::runtime_error(Formatter() << foo << 13 << ", bar" << myData >> Formatter::to_str); // explicitly cast to std::string
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Static class initializer in PHP
I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor).
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How can I hash a password in Java?
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You can actually use a facility built in to the Java runtime to do this. The SunJCE in Java 6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("pas...
SPAN vs DIV (inline-block)
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So, if your element is inline or inline-block use a <span>. If it's a block level element, use a <div>.
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