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What are the uses of “using” in C#?

... is to ensure that the object is disposed as soon as it goes out of scope, and it doesn't require explicit code to ensure that this happens. As in Understanding the 'using' statement in C# (codeproject) and Using objects that implement IDisposable (microsoft), the C# compiler converts using (MyRes...
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No appenders could be found for logger(log4j)?

...valid. That guide will give you some information about how to use loggers and appenders. Just to get you going you have two simple approaches you can take. First one is to just add this line to your main method: BasicConfigurator.configure(); Second approach is to add this standard log4j.pro...
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Protecting Java Source Code From Being Accessed [closed]

...chool mates did it. They have stolen my one from where we had to upload it and then they uploaded it again as theirs. When I told my teacher it was all my work he did not believe me. ...
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Color Tint UIButton Image

...o match the tint of the segmented control. I thought this was really cool, and was wondering if I could do this elsewhere as well. For example, I have a bunch of buttons that have a uniform shape but varied colors. Instead of making a PNG for each button, could I somehow use this color masking to us...
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Can I restore deleted files (undo a `git clean -fdx`)?

I was following the instructions on making github pages , and forgot to move down into my git sub directory. As a result, I just nuked an entire directory of documents with git clean -fdx . Is there any way I can undo this terrible mistake? ...
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Difference between getContext() , getApplicationContext() , getBaseContext() and “this”

... between getContext() , getApplicationContext() , getBaseContext() , and " this "? 8 Answers ...
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Setting PATH environment variable in OSX permanently

...ly solution that works on El Capitan. Better than modifying .bash_profile and .profile. – IgorGanapolsky Nov 29 '15 at 21:06 1 ...
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What is the best way to implement constants in Java? [closed]

... That is perfectly acceptable, probably even the standard. (public/private) static final TYPE NAME = VALUE; where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value; I highly recommend NOT putting your constants in ...
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How to reset sequence in postgres and fill id column with new data?

I have a table with over million rows. I need to reset sequence and reassign id column with new values (1, 2, 3, 4... etc...). Is any easy way to do that? ...
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Change an HTML5 input's placeholder color with CSS

...here are three different implementations: pseudo-elements, pseudo-classes, and nothing. WebKit, Blink (Safari, Google Chrome, Opera 15+) and Microsoft Edge are using a pseudo-element: ::-webkit-input-placeholder. [Ref] Mozilla Firefox 4 to 18 is using a pseudo-class: :-moz-placeholder (one colon)....