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What is the best way to implement constants in Java? [closed]

...erent aspects of the application), this generally turns into the constants file being completely unreadable. Instead: If you have access to Java 5+, use enums to define your specific constants for an application area. All parts of the application area should refer to enums, not constant values, ...
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Android Facebook integration with invalid key hash

...oding without fail (you may find your package name in the Android manifest file). Run your application. Go to the activity where you pasted the above code. In the LogCat file, search for "KeyHash". You may find a key hash. Copy the key hash and go to Facebook application dashboard page. Go to setti...
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding

...loading) the path to avrdude, the path to the config and path to the flash file. This can easily be copy pasted into the command line and the -v's be added. – powtac Mar 25 '15 at 19:33 ...
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Difference between GIT and CVS

...tomic operations. Because CVS at beginning was a set of scripts around per-file RCS version control system, commits (and other operations) are not atomic in CVS; if an operation on the repository is interrupted in the middle, the repository can be left in an inconsistent state. In Git all operation...
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How to add some non-standard font to a website?

...Condensed; src: url("../fonts/pf_tempesta_seven_condensed.eot") /* EOT file for IE */ } @font-face { font-family: TempestaSevenCondensed; src: url("../fonts/pf_tempesta_seven_condensed.ttf") /* TTF file for CSS3 browsers */ } so you'll just need both the ttf and eot fonts. Some tools a...
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How to choose between Hudson and Jenkins? [closed]

...pen, but there was a bit of benign neglect. The source, trackers, website, etc. were hosted by Sun on their relatively closed java.net platform. Then Oracle bought Sun. For various reasons Oracle has not been shy about leveraging what it perceives as its assets. Those include some control over the ...
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Unicode Processing in C++

...icode library for mundane tasks like string length, capitalization status, etc. Never use standard library builtins like is_alpha unless that is the definition you want. I can't say it enough: never iterate over the indices of a string if you care about correctness, always use your unicode library f...
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How would I get a cron job to run every 30 minutes?

... "run when the minute of each hour is 30" (would run at: 1:30, 2:30, 3:30, etc) example #2 */30 * * * * your_command this means "run when the minute of each hour is evenly divisible by 30" (would run at: 1:30, 2:00, 2:30, 3:00, etc) example #3 0,30 * * * * your_command this means "run when the...
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it

...throwing is a better or cleaner way to handle a situation like nonexistent file or null pointer, regardless of whether those situations are common, and without considering the performance cost. – LarsH Apr 19 '13 at 18:37 ...
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CSS selector for text input fields?

...se selectors in my main stylesheet, then make an ie6 specific .js (jquery) file that adds a class to all of the input types. Example: $(document).ready(function(){ $("input[type='text']").addClass('text'); )}; And then just duplicate my styles in the ie6 specific stylesheet using the classes. T...