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Why use a ReentrantLock if one can use synchronized(this)?

...time-out. ReentrantLock also has support for configurable fairness policy, allowing more flexible thread scheduling. The constructor for this class accepts an optional fairness parameter. When set true, under contention, locks favor granting access to the longest-waiting thread. Otherwise this lock...
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How can I increment a char?

...and C. How can I increment a char? In Java or C, chars and ints are practically interchangeable, and in certain loops, it's very useful to me to be able to do increment chars, and index arrays by chars. ...
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Maven project version inheritance - do I have to specify the parent version?

...most cases. Moreover, this parent's version declaration is bumped automatically by Maven Release Plugin, so - in fact - it's not a problem that you have version in 2 places as long as you use Maven Release Plugin for releasing or just bumping versions. Notice that there are some cases when this beh...
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Bash script to receive and repass quoted parameters

...at given the output you want, you don't need the extra level of quoting at all. I.E. just call the above script like: ./test.sh 1 2 "3 4" share | improve this answer | foll...
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Return 0 if field is null in MySQL

...ou show why Kevin's example in the comment is wrong and what it should actually be? – Michael Aug 10 '16 at 13:44 than...
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Why does Google prepend while(1); to their JSON responses?

... It prevents JSON hijacking, a major JSON security issue that is formally fixed in all major browsers since 2011 with ECMAScript 5. Contrived example: say Google has a URL like mail.google.com/json?action=inbox which returns the first 50 messages of your inbox in JSON format. Evil websites on...
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How to run JUnit tests with Gradle?

... when i do gradle test, it doesn't do anything. It doesn't run my tests at all. Any idea? – Gaurav Nov 11 '16 at 5:35 ...
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How can I get browser to prompt to save password?

...tton is clicked. Then, binding a function to the button for ajax login. Finally, calling $('#loginForm').submit(); redirects to the signed-in page. If the signed-in page is current page, then you can replace 'signedIn.xxx' by current page to make the 'refresh'. Now, you will find that the method fo...
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Should image size be defined in the img tag height/width attributes or in CSS? [duplicate]

...on what you want to do, you would specify one and/or the other. I think ideally, the original height and width would always be specified as HTML element attributes, while styling information should optionally be conveyed in CSS. ...
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Private setters in Json.Net

...ed, new answer I've written a source distribution NuGet for this, that installs a single file with two custom contract resolvers: PrivateSetterContractResolver PrivateSetterCamelCasePropertyNamesContractResolver Install the NuGet: Install-Package JsonNet.PrivateSettersContractResolvers.Source The...