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How are Anonymous inner classes used in Java?
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By an "anonymous class", I take it you mean anonymous inner class.
An anonymous inner class can come useful when making an instance of an object with certain "extras" such as overriding methods, without having to actually subclass a class.
I tend to use i...
What is the purpose of fork()?
... have seen code using fork() . Why do we need to use fork() and what is its purpose?
15 Answers
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Maven Install on Mac OS X
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OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are met, run mvn -version and see some output li...
Comparison of C++ unit test frameworks [closed]
...know there are already a few questions regarding recommendations for C++ unit test frameworks, but all the answers did not help as they just recommend one of the frameworks but do not provide any information about a (feature) comparison.
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MySql server startup error 'The server quit without updating PID file '
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try to find your log file with suffix ".err", there should be more info. It might be in:
/usr/local/var/mysql/your_computer_name.local.err
It's probably problem with permissions
check if any mysql instance is running
ps -ef | grep mysql
i...
How do I move a redis database from one server to another?
...r to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redis?
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WebAPI Multiple Put/Post parameters
...follow
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edited Jul 25 '16 at 6:55
answered May 18 '16 at 11:20
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Understanding repr( ) function in Python
repr() : evaluatable string representation of an object (can "eval()"
it, meaning it is a string representation that evaluates to a Python
object)
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Proper usage of Optional.ifPresent()
...Present() takes a Consumer<? super User> as argument. You're passing it an expression whose type is void. So that doesn't compile.
A Consumer is intended to be implemented as a lambda expression:
Optional<User> user = ...
user.ifPresent(theUser -> doSomethingWithUser(theUser));
O...
How to tell if node.js is installed or not
... further instructions. What does one really need to do? I wanted to see if it was actually working. So I executed a script called hello.js. It went as such:
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