How do I create variable variables?

pythonvariable-variables
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What is The Rule of Three?

c++c++-faqcopy-constructorassignment-operatorrule-of-three
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How does the "this" keyword work, and when should it be used?

javascriptthis
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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?

javaarraysexceptionarrayindexoutofboundsexception
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Scanner is skipping nextLine() after using next() or nextFoo()?

javaiojava.util.scanner
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