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Regexp Java for password validation
I'm creating a regexp for password validation to be used in a Java application as a configuration parameter.
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How can I pass a member function where a free function is expected?
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What is the difference between a map and a dictionary?
I know a map is a data structure that maps keys to values. Isn't a dictionary the same? What is the difference between a map and a dictionary 1 ?
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What is “lifting” in Scala?
Sometimes when I read articles in the Scala ecosystem I read the term "lifting" / "lifted". Unfortunately, it is not explained what that exactly means. I did some research, and it seems that lifting has something to do with functional values or something like that, but I was not able to find a text ...
Least common multiple for 3 or more numbers
How do you calculate the least common multiple of multiple numbers?
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How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
So if I have to choose between a hash table or a prefix tree what are the discriminating factors that would lead me to choose one over the other. From my own naive point of view it seems as though using a trie has some extra overhead since it isn't stored as an array but that in terms of run time (a...
Is Python strongly typed?
I've come across links that say Python is a strongly typed language.
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How to remove specific elements in a numpy array
How can I remove some specific elements from a numpy array? Say I have
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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
In this excellent SO question , differences between CTE and sub-queries were discussed.
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What is the performance cost of having a virtual method in a C++ class?
Having at least one virtual method in a C++ class (or any of its parent classes) means that the class will have a virtual table, and every instance will have a virtual pointer.
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