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How can I determine whether a 2D Point is within a Polygon?

I'm trying to create a fast 2D point inside polygon algorithm, for use in hit-testing (e.g. Polygon.contains(p:Point) ). Suggestions for effective techniques would be appreciated. ...
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Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate

I've seen mixed versions of this in a lot of code. (This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters. ...
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How do I restart a service on a remote machine in Windows? [closed]

Sometimes while debugging, I need to restart a service on a remote machine. Currently, I'm doing this via Remote Desktop. How can it be done from the command line on my local machine? ...
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Difference between modes a, a+, w, w+, and r+ in built-in open function?

In the python built-in open function, what is the exact difference between the modes w , a , w+ , a+ , and r+ ? 6 An...
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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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Best way to define error codes/strings in Java?

I am writing a web service in Java, and I am trying to figure out the best way to define error codes and their associated error strings . I need to have a numerical error code and an error string grouped together. Both the error code and error string will be sent to the client accessing the web ser...
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Undefined reference to static constexpr char[]

I want to have a static const char array in my class. GCC complained and told me I should use constexpr , although now it's telling me it's an undefined reference. If I make the array a non-member then it compiles. What is going on? ...
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How do I toggle an ng-show in AngularJS based on a boolean?

I have a form for replying to messages that I want to show only when isReplyFormOpen is true, and everytime I click the reply button I want to toggle whether the form is shown or not. How can I do this? ...
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Is there a version control system for database structure changes?

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How to Set Variables in a Laravel Blade Template

I'm reading the Laravel Blade documentation and I can't figure out how to assign variables inside a template for use later. I can't do {{ $old_section = "whatever" }} because that will echo "whatever" and I don't want that. ...