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Multi-line tooltips in Java?
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Tooltip text which starts with "<html>" will be treated as HTML. Of course that might be very wide HTML.
You can override JComponent.createTooltip to replace the tooltip with your own component which can display whatevee you like.
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How do I drop a MongoDB database from the command line?
...can stop mongod and delete the data files from your data directory, then restart.
Hint: you can also move the data files to a subfolder, and delete them if you're sure you no longer need them.
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RegEx for matching UK Postcodes
...egular expression. It may not be exactly what you want but would be a good starting point. The RegEx differs from the XML slightly, as a P character in third position in format A9A 9AA is allowed by the definition given.
The RegEx supplied by the UK Government was:
([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za...
Running JAR file on Windows
...Program Files\Java\j2re1.4.2_04\bin\javaw.exe" -jar "%1" % (Note: the part starting with 'javaw' must be exactly like that; the other part of the path name can vary depending on which version of Java you're using) then press the OK buttons until all the dialogs are closed.
Which was stolen from he...
Best way to get application folder path
... When testing in Windows XP 32bit, it returns where the shortcut started.
– Joshua Son
Dec 7 '13 at 2:37
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What is the lifetime of a static variable in a C++ function?
...and can be problematic as Roddy mentions.
[1] C++98 section 3.6.3.1 [basic.start.term]
[2] In C++11 statics are initialized in a thread safe way, this is also known as Magic Statics.
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java.lang.OutOfMemoryError: Java heap space in Maven
... Xmx options using MAVEN_OPTS does work, it does configure the JVM used to start Maven. That being said, the maven-surefire-plugin forks a new JVM by default, and your MAVEN_OPTS are thus not passed.
To configure the sizing of the JVM used by the maven-surefire-plugin, you would either have to:
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How do you append to a file in Python?
...e file - consider what might happen if another program opened the file and started writing between the seek and the write. On some operating systems, opening the file with 'a' guarantees that all your following writes will be appended atomically to the end of the file (even as the file grows by othe...
How does one write code that best utilizes the CPU cache to improve performance?
...ance, after a few misses to subsequent cache lines, the hw prefetcher will start fetching cache lines into the cache, anticipating the application's needs. If you have a regular access pattern, the hardware prefetcher is usually doing a very good job. And if your program doesn't display regular acce...
Padding characters in printf
...agic is the ${line:${#PROC_NAME}}, which uses bash substring extraction to start only return from a point of the variable line, which is set to start at the number of characters in PROC_NAME. tldp.org/LDP/abs/html/string-manipulation.html#SUBSTREXTR01
– cwingrav
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