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Java: difference between strong/soft/weak/phantom reference
I have read this article about the topic, but I don't really understand it.
Please give me some advice along with examples when describing the concepts.
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How to stop an animation (cancel() does not work)
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Call clearAnimation() on whichever View you called startAnimation().
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How to exit from PostgreSQL command line utility: psql
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google.com
Quit PSQL
\q
I think veterans of the psql command line usually shorten that to just:
\q
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Get time in milliseconds using C#
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This is normally only accurate to the nearest 15ms or so.
– Steven Sudit
Oct 25 '10 at 16:29
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Canary release strategy vs. Blue/Green
...old until someone flips a feature toggle. Breaking your application into small, independently releaseable services is another, since there is less to test and less that can break.
You need to do a canary release if you're not completely certain that the new version will function correctly in produc...
Does Java have buffer overflows?
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Since Java Strings are based on char arrays and Java automatically checks array bounds, buffer overflows are only possible in unusual scenarios:
If you call native code via JNI
In the JVM itself (usually written in C++)
The interpreter or JIT compiler does not work correctly (Java byt...
Show a number to two decimal places
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All the other answers are limited to decimal values with a dot notation. When you need to get 520,00 instead of 520.00, this simply works.
– SPRBRN
May 8 '14 at 15:06
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How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
...u are looking for, with -a and -p options, man netstat is your friend for all the rest :)
– sox with Monica
Jul 26 '17 at 20:38
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How to do a recursive find/replace of a string with awk or sed?
... -type d -name .git -prune \) is an expression which completely skips over all directories named .git. You could easily expand it, if you use SVN or have other folders you want to preserve -- just match against more names. It's roughly equivalent to -not -path .git, but more efficient, because rathe...
Private module methods in Ruby
...itten) to do this is by creating a class within the module that deals with all the logic, and the module just provides a convenient method, e.g.
module GTranslate
class Translator
def perform( text ); translate( text ); end
private
def translate( text )
# do some private stuff...