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Explain how finding cycle start node in cycle linked list work?
I understand that Tortoise and Hare's meeting concludes the existence of loop, but how does moving tortoise to beginning of linked list while keeping the hare at meeting place, followed by moving both one step at a time make them meet at starting point of cycle?
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
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How to create a shared library with cmake?
I have written a library that I used to compile using a self-written Makefile, but now I want to switch to cmake. The tree looks like this (I removed all the irrelevant files):
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What are free monads?
...ome time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of category theory.)
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Reverse a string in Python
There is no built in reverse function for Python's str object. What is the best way of implementing this method?
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What XML parser should I use in C++? [closed]
I have XML documents that I need to parse and/or I need to build XML documents and write them to text (either files or memory). Since the C++ standard library does not have a library for this, what should I use?
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How does the const constructor actually work?
I've noticed it's possible to create a const constructor in Dart. In the documentation, it says that const word is used to denote something a compile time constant.
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What is the difference between canonical name, simple name and class name in Java Class?
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How to detect if a script is being sourced
I have a script where I do not want it to call exit if it's being sourced.
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What are inline namespaces for?
C++11 allows inline namespace s, all members of which are also automatically in the enclosing namespace . I cannot think of any useful application of this -- can somebody please give a brief, succinct example of a situation where an inline namespace is needed and where it is the most idiomatic s...