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How to make Java honor the DNS Caching Timeout?
... .war's code is executed. Because of this 'race condition', it is usually more convenient to use the -D flag when starting the JVM process.
If you don't use -Dsun.net.inetaddr.ttl=0 or call Security.setProperty, you will need to edit $JRE_HOME/lib/security/java.security and set those security pro...
What is the dual table in Oracle?
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More Facts about the DUAL....
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1562813956388
Thrilling experiments done here, and more thrilling explanations by Tom
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IntelliJ: Never use wildcard imports
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Looks like three nines should be enough. If you need more than a thousand imports I'd say your class should be refactored.
– duffymo
Apr 5 '16 at 20:09
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Convert string to a variable name
...reated in an automated script. (as.name seems to work the opposite way). More experienced coders will doubtless have a better solution, but this solution works and is slightly humorous perhaps, in that it gets R to write code for itself to execute.
Say I have just assigned value 5 to x (var.name ...
The way to check a HDFS directory's size?
...dfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info and specifics.
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What's a reliable way to make an iOS app crash?
...version of the C runtime OR the compiler this might not lead to a crash anymore. see Is null pointer dereference undefined behavior in Objective-C?)
(in swift you would have to bridge to objC to do this)
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How to use glyphicons in bootstrap 3.0
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How to set standard encoding in Visual Studio
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Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
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Java regex capturing groups indexes
...ched with Matcher.group(String name). The regex is longer, but the code is more meaningful, since it indicates what you are trying to match or extract with the regex.
The group names are used in back-reference \k<name> in pattern and ${name} in replacement string.
Named capturing groups are ...