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Move assignment operator and `if (this != &rhs)`
In the assignment operator of a class, you usually need to check if the object being assigned is the invoking object so you don't screw things up:
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SQL query to get all values a enum can have
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Programmatically change log level in Log4j2
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I found a good answer here: https://garygregory.wordpress.com/2016/01/11/changing-log-levels-in-log4j2/
You can use org.apache.logging.log4j.core.config.Configurator to set the level for a specific logger.
Logger logger = LogManager.getLogger(Test.cla...
Check if a Postgres JSON array contains a string
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Total number of items defined in an enum
How can I get the number of items defined in an enum?
10 Answers
10
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How do I use a PriorityQueue?
How do I get a PriorityQueue to sort on what I want it to sort on?
12 Answers
12
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Base64 Java encode and decode a string [duplicate]
I want to encode a string into base64 and transfer it through a socket and decode it back.
6 Answers
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How to debug an apache virtual host configuration?
Once again, I have a problem with my apache virtual host configuration. (The default configuration is used instead of my specific one).
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Select rows which are not present in other table
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How can I make a div stick to the top of the screen once it's been scrolled to?
...: -webkit-sticky.
Polyfills are available for Internet Explorer and Edge; https://github.com/wilddeer/stickyfill seems to be a good one.
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