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Import package.* vs import package.SpecificType [duplicate]

...ld it suppose any difference regarding overhead to write an import loading all the types within one package ( import java.* ); than just a specific type (i.e. import java.lang.ClassLoader )? Would the second one be a more advisable way to use than the other one? ...
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How to check if a string is a valid date

... Using a "catch-it-all" rescue should be considered an anti-pattern. It can hide out other errors which we don't expect and make the debugging of the code extremely difficult. – yagooar Jan 29 '13 at 10:32...
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How to implement the Android ActionBar back button?

... In my situation I was looking for a way to not call onCreate of the parent when returning to it. To do this, I used your implementation, but called finish() instead of NavUtils.navigateUpFromSameTask(this). finish() calls my onStart instead of onCreate which was more ideal...
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How can I measure the similarity between two images? [closed]

...is is just to do the following steps to each image: scale to something small, like 64x64 or 32x32, disregard aspect ratio, use a combining scaling algorithm instead of nearest pixel scale the color ranges so that the darkest is black and lightest is white rotate and flip the image so that the ligh...
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Creating a temporary directory in Windows?

... This seems a little dangerous. In particular, there's a chance (small, but non-zero, right?) that Path.Combine(Path.GetTempPath(), Path.GetRandomFileName()) will return the name of a directory that already exists. Since Directory.CreateDirectory(tempDirectory) won't throw an exception if te...
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PyLint, PyChecker or PyFlakes? [closed]

...plus for everybody, but I like it ;-) Cons of PyLint: Some rules are really strict. I know that you can change it and that the default is to match PEP8, but is it such a crime to write 'for x in seq'? Apparently yes because you can't write a variable name with less than 3 letters. I will change ...
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How to let PHP to create subdomain automatically for each user?

...tp://user.mywebsite.com ? Do i have to access htaccess somehow? Is it actually simply possible to create it via pure php code or I need to use some external script-server side language? ...
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How can I make a .NET Windows Forms application that only runs in the System Tray?

...of creating an application that only ever exists in the System Tray. Basically change the Application.Run(new Form1()); line in Program.cs to instead start up a class that inherits from ApplicationContext, and have the constructor for that class initialize a NotifyIcon static class Program { /...
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Password masking console application

...comments, and modifying it to use SecureString instead of String, test for all control keys, and not error or write an extra "*" to the screen when the password length is 0, my solution is: public static SecureString getPasswordFromConsole(String displayMessage) { SecureString pass = new Secure...
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Preview an image before it is uploaded

...file (image) before it is uploaded. The preview action should be executed all in the browser without using Ajax to upload the image. ...