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Get keys from HashMap in Java
...ke BidiMap (a map that allows bidirectional lookup between key and values) from Apache's Commons Collections - also be aware that several different keys could be mapped to the same value.
share
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im...
Java “Virtual Machine” vs. Python “Interpreter” parlance?
...know as the Java VM is not really Java specific. You could make a compiler from other languages that result in byte codes that can be run on the JVM. On the other hand, I don't think we would really think of "compiling" some other language other than Python into Python for interpretation by the Pyth...
java.io.Console support in Eclipse IDE
...
I assume you want to be able to use step-through debugging from Eclipse. You can just run the classes externally by setting the built classes in the bin directories on the JRE classpath.
java -cp workspace\p1\bin;workspace\p2\bin foo.Main
You can debug using the remote debugger an...
Grep and Sed Equivalent for XML Command Line Processing
...ten in SML, so
installation may be difficult.
LT XML:
XML toolkit derived from SGML tools, including sggrep, sgsort,
xmlnorm and others. Uses its own query syntax. The documentation is
very formal. Written in C. LT XML 2 claims support of XPath, XInclude
and other W3C standards.
xmlgrep2:
simple...
Remove first element from $@ in bash [duplicate]
I'm writing a bash script that needs to loop over the arguments passed into the script. However, the first argument shouldn't be looped over, and instead needs to be checked before the loop.
...
Running code in main thread from another thread
...hat I need to update it. Since the original answer was posted, the comment from @dzeikei has gotten almost as much attention as the original answer. So here are 2 possible solutions:
1. If your background thread has a reference to a Context object:
Make sure that your background worker threads hav...
Assigning a variable NaN in python without numpy
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Yes -- use math.nan.
>>> from math import nan
>>> print(nan)
nan
>>> print(nan + 2)
nan
>>> nan == nan
False
>>> import math
>>> math.isnan(nan)
True
Before Python 3.5, one could use float("nan") (case i...
Correct idiom for managing multiple chained resources in try-with-resources block?
...er(file))) {
bw.write(text);
}
For me, the best thing coming to Java from traditional C++ 15 years ago was that you could trust your program. Even if things are in the muck and going wrong, which they often do, I want the rest of the code to be on best behaviour and smelling of roses. Indeed, ...
What is “loose coupling?” Please provide examples
...t understood the first basic tenet of loose coupling: abstraction. The key from here is to ensure that ABC and XYZ do not depend on any methods or variables of the classes that call them. That allows ABC and XYZ to be completely independent APIs. Or in other words, they are "decoupled" or "loosely c...
What good technology podcasts are out there?
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All from General Software are great! And I can see, that 43 Folders are broadcastin again!
– Tomasz Tybulewicz
Mar 13 '09 at 10:44
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