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What are bitwise shift (bit-shift) operators and how do they work?

...hift operator, and meets the needs of both logical and arithmetic shifts. All of these operators can be applied to integer values (int, long, possibly short and byte or char). In some languages, applying the shift operators to any datatype smaller than int automatically resizes the operand to be a...
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doGet and doPost in Servlets

...ould use doPost() when you want to intercept on HTTP POST requests. That's all. Do not port the one to the other or vice versa (such as in Netbeans' unfortunate auto-generated processRequest() method). This makes no utter sense. GET Usually, HTTP GET requests are idempotent. I.e. you get exactly t...
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How to echo shell commands as they are executed

In a shell script, how do I echo all shell commands called and expand any variable names? 13 Answers ...
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Has anyone ever got a remote JMX JConsole to work?

...solution for this: If your Java process is running on Linux behind a firewall and you want to start JConsole / Java VisualVM / Java Mission Control on Windows on your local machine to connect it to the JMX Port of your Java process. You need access to your linux machine via SSH login. All Communic...
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How to send a stacktrace to log4j?

... I never know what to stuff into the first String, usually I just end up doing log.error(e.getLocalizedMessage(), e) which is totally redundant. Does it handle a null for the first argument? – Mark Peters Dec 3 '10 at 16:52 ...
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How to avoid “RuntimeError: dictionary changed size during iteration” error?

I have checked all of the other questions with the same error yet found no helpful solution =/ 11 Answers ...
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My images are blurry! Why isn't WPF's SnapsToDevicePixels working?

..."True". A property previously only available in Silverlight has now fixed all Bitmap sizing woes. :) share | improve this answer | follow | ...
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What's a good IDE for Python on Mac OS X? [closed]

... If the question was "What's an IDE for python that actually works and actually has basic functionality" then PyCharm would be the ONLY answer – samthebest Dec 3 '13 at 14:47 ...
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Is a colon `:` safe for friendly-URL use?

... will specify application sections as words separated by slashes. Specifically, this is in GWT, so the relevant parts of the URL will be in the hash (which will be interpreted by a controller layer on the client-side): ...
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How can I convert a comma-separated string to an array?

... Best practice for support all types of strings. See here stackoverflow.com/a/32657055/2632619 – Andi AR Sep 18 '15 at 16:46 7 ...