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How to properly compare two Integers in Java?
...stem.out.println(x == y);
this will check whether x and y refer to the same object rather than equal objects.
So
Integer x = new Integer(10);
Integer y = new Integer(10);
System.out.println(x == y);
is guaranteed to print false. Interning of "small" autoboxed values can lead to tricky results...
Named regular expression group “(?Pregexp)”: what does “P” stand for?
In Python, the (?P<group_name>…) syntax allows one to refer to the matched string through its name:
3 Answers
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Moving Files into a Real Folder in Xcode
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A modern (and dead simple!) approach for 2017 (Xcode 6, 7, 8, and sometimes 9, since it does it automagically some of the time):
If you're moving a bunch of files into a new folder and are keeping the child hierarchy, it's actually a lot easier than moving each file individually:
Create ne...
I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it
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I'm curious, what do you think "a ThreadSafe collection" would do to become thread-safe, if it doesn't use locks?
Edit: I should probably explain by what I mean by "opt out of most of this lock". Any number of read-only-session or no-session pages can be processed for a given session at the same ...
How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?
I was looking at the Proxy Pattern, and to me it seems an awful lot like the Decorator, Adapter, and Bridge patterns. Am I misunderstanding something? What's the difference? Why would I use the Proxy pattern versus the others? How have you used them in the past in real world projects?
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Inherit from a generic base class, apply a constraint, and implement an interface in C#
...m a generic base class and is applying a constraint to one of the type parameters. I also want the derived class to implement an interface. For the life of me, I cannot seem to figure out the correct syntax.
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Java lib or app to convert CSV to XML file? [closed]
Is there an existing application or library in Java which will allow me to convert a CSV data file to XML file?
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What's the false operator in C# good for?
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What does the LayoutInflater attachToRoot parameter mean?
The LayoutInflater.inflate documentation isn't exactly clear to me about the purpose of the attachToRoot parameter.
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Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
I have a requirements.txt file that I'm using with Travis-CI. It seems silly to duplicate the requirements in both requirements.txt and setup.py , so I was hoping to pass a file handle to the install_requires kwarg in setuptools.setup .
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