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How can I convert a DateTime to the number of seconds since 1970?
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You can create a startTime and endTime of DateTime, then do endTime.Subtract(startTime). Then output your span.Seconds.
I think that should work.
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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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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...
Remove duplicate values from JS array [duplicate]
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I really wish in 2020 we could start depreciating jQuery and other even-more dated answers... Stackoverflow is starting to show some age here...
– Nick Steele
Jun 29 at 23:23
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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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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...
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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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
... I did initialize my array only ONCE at game start NOT at the consecutive re-starts - so ALL OLD pieces remained "onscreen" - they were just drawn anew !!! I AM VERY SORRY for my "dumbness"! Thanks to both of you !!!
– samClem...