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When to use AtomicReference in Java?
When do we use AtomicReference ?
8 Answers
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Firing events on CSS class changes in jQuery
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Whenever you change a class in your script, you could use a trigger to raise your own event.
$(this).addClass('someClass');
$(mySelector).trigger('cssClassChanged')
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$(otherSelector).bind('cssClassChanged', data, function(){ do stuff });
but otherwise, no, there's no baked-in way to fi...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
..., so 2147483647 + 1 overflows and gives you a new int, which is assignable to int, while 127 + 1 also evaluated as int equals to 128, and it is not assignable to byte.
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How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
How to get timestamp in string format in Java? "yyyy.MM.dd.HH.mm.ss"
7 Answers
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NodeJS: Saving a base64-encoded image to disk
...eceiving a base64-encoded PNG from the browser (generated from canvas with toDataURL() ) and writing it to a file. But the file isn't a valid image file, and the "file" utility simply identifies it as "data".
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How to differentiate single click event and double click event?
I have a single button in li with id "my_id" . I attached two jQuery events with this element
18 Answers
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...+3+...+1000 just using compiler features. This means that I am not allowed to write a program and execute it, but I should just write a program that could drive the compiler to compute this sum while compilation and print the result when compilation completes. As a hint, he told me that I may use ge...
What is the difference between POST and GET? [duplicate]
I've only recently been getting involved with PHP/AJAX/jQuery and it seems to me that an important part of these technologies is that of POST and GET .
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Running a cron every 30 seconds
Ok so I have a cron that I need to run every 30 seconds.
19 Answers
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Check if database exists in PostgreSQL using shell
I was wondering if anyone would be able to tell me about whether it is possible to use shell to check if a PostgreSQL database exists?
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