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How to override toString() properly in Java?
...ing() method, returns the desired output, it can be the state of an object etc. depends on your implementation.
Advantage of Java toString() method
By overriding the toString() method of the Object class, we can return values of the object, so we don't need to write much code.
Output without toSt...
Difference between validate(), revalidate() and invalidate() in Swing GUI
... manager used by it), changes. Which pushes it to the invalid state. So in order to validate this change, you have to explicitly call revalidate().
invalidate() : This is something I have never used, so there might not be much info I can provide about it. But it seems like the scenarios presented a...
How to get a Docker container's IP address from the host
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In order to extract the ip, you can do something like docker inspect $CID | grep IPAddress | cut -d '"' -f 4, it works fine :)
– creack
Jun 17 '13 at 23:39
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PHP - iterate on string characters
...like to be able to do foreach , array_map , array_walk , array_filter etc. on the characters of a string.
9 Answers
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Unable to resolve host “”; No address associated with hostname [closed]
...uter to sleep or changing the network connection (going from work to home, etc), then attempting to use the same emulator again. Closing and re-launching the emulator resolves the problem in this case.
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Heroku push rejected, no Cedar-supported app detected
... need a package.json.
For Python applications you need a requirements.txt.
etc.
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What is the purpose of the HTML “no-js” class?
...ds faster with no FOUC (flash of unstyled content)
Separation of concerns, etc...
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Inserting HTML elements with JavaScript
...can use native DOM methods for insertion such as insertBefore, appendChild etc.
You have access to the actual DOM nodes before they're inserted; you can access the fragment's childNodes object.
Using document fragments is very quick; faster than creating elements outside of the DOM and in certain si...
Why java.io.File doesn't have a close() method?
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Essentially random access file wraps input and output streams in order to manage the random access. You don't open and close a file, you open and close streams to a file.
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Objective-C parse hex string to integer
...re lenient. Write thorough unit tests (include spaces, non-hex characters, etc..) as you will find some surprising edge cases that NSScanner gives you more control over.
– Quintin Willison
Mar 30 '17 at 14:15
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