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What does value & 0xff do in Java?

I have the following Java code: 4 Answers 4 ...
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How to set enum to null

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How is “=default” different from “{}” for default constructor and destructor?

I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question: ...
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Getting one value from a tuple

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How to list files in a directory in a C program?

I'm trying to write an ftp server on Linux. In this matter how can I list files in the directory on terminal by a C program? Maybe I can use exec function to run find command but I want file name as a string to send client program. How can I do this? ...
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C# List of objects, how do I get the sum of a property

I have a list of objects. One property of the individual object entry is amount. How do I get the sum of amount? 4 Answers ...
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Can I change the viewport meta tag in mobile safari on the fly?

...p built for mobile Safari browser that needs to display different types of content. 3 Answers ...
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Golang: How to pad a number with zeros when printing?

How can I print a number or make a string with zero padding to make it fixed width? 6 Answers ...
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How to print formatted BigDecimal values?

I have a BigDecimal field amount which represents money, and I need to print its value in the browser in a format like $123.00 , $15.50 , $0.33 . ...
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Check a collection size with JSTL

How can I check the size of a collection with JSTL? 4 Answers 4 ...