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How to synchronize a static variable among threads running different instances of a class in Java?
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There are several ways to synchronize access to a static variable.
Use a synchronized static...
Check if a string contains a string in C++
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How to split a sequence into two pieces by predicate?
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By using partition method:
scala> List(1,2,3,4).partition(x => x % 2 == 0)
res0: (List...
Create a pointer to two-dimensional array
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How to run a background task in a servlet based web application?
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Your problem is that you misunderstand the purpose of the servlet. It's intented to act on HTTP...
How does collections.defaultdict work?
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How do I detect the Python version at runtime? [duplicate]
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Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number.
In Python 2.7 and later, the components of sys.version_info can also be accessed by name, so the major version number is sys.version_info.major.
See also How can I check for Pytho...
Pandas convert dataframe to array of tuples
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Why does PHP consider 0 to be equal to a string?
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You are doing == which sorts out the types for you.
0 is an int, so in this case it is going ...
Get item in the list in Scala?
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Use parentheses:
data(2)
But you don't really want to do that with lists very often, since l...