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How to use a servlet filter in Java to change an incoming servlet request url?

...n url-pattern of /* or /Check_License/*, depending on the context path, or if you're on Servlet 3.0 already, use the @WebFilter annotation for that instead. Don't forget to add a check in the code if the URL needs to be changed and if not, then just call FilterChain#doFilter(), else it will call i...
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What is going wrong when Visual Studio tells me “xcopy exited with code 4”

... Click > Properties > Build Events > Post Build Event. Note that if the $(ProjectDir) or similar macro terms have spaces in the resulting paths when expanded, then they will need to be wrapped in double quotes. For example: xcopy "$(ProjectDir)Library\dsoframer.ocx" "$(TargetDir)" /Y /E /...
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How can I implode an array while skipping empty array items?

... You can use array_filter(): If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed. implode('-', array_filter($array)); Obviously this will not work if you have 0 (or any other value that evaluat...
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cv2.imshow command doesn't work properly in opencv-python

...://txt.arboreus.com/2012/07/11/highgui-opencv-window-from-ipython.html If you run an interactive ipython session, and want to use highgui windows, do cv2.startWindowThread() first. In detail: HighGUI is a simplified interface to display images and video from OpenCV code. It should be as...
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default select option as blank

...</select> -- select an option -- Will be displayed by default. But if you choose an option,you will not be able select it back. You can also hide it using by adding an empty option <option style="display:none"> so it won't show up in the list anymore. Option 2 If you don't want to...
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What's the difference between assignment operator and copy constructor?

I don't understand the difference between assignment constructor and copy constructor in C++. It is like this: 8 Answers ...
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Break parallel.foreach?

...t;((ColorIndexHolder Element, ParallelLoopState state) => { if (Element.StartIndex <= I && Element.StartIndex + Element.Length >= I) { Found = true; state.Break(); } })); ...
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How to define different dependencies for different product flavors

... To define a flavor specific dependency you can use proCompile instead of compile in your dependency section. When you run gradle properties you get an overview of automatic created configurations. The correct build file looks like this: buildscr...
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Is it possible to rotate a drawable in the xml description?

...otated state of the drawable in the animation sequence but can be anything if you don't want to use animation. I don't think it allocates resources for animation as it doesn't have to be loaded as animation. As a drawable it is rendered as it's initial state and should be put in the drawable resour...
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Extracting specific columns in numpy array

...asy question but say I have an MxN matrix. All I want to do is extract specific columns and store them in another numpy array but I get invalid syntax errors. Here is the code: ...