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    "Real world use" seems to be asking the wrong question, similar to "what are real world uses of arrays?" Commented Oct 6, 2010 at 2:12
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    Everyone knows the real world use of arrays! Commented Oct 6, 2010 at 3:02
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    Contrast how many time have to used Fibonacci heaps to the number of times you have used arrays in your entire programming life. Commented Oct 6, 2010 at 3:03
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    Related: Has anyone actually implemented a Fibonacci heap efficiently?. Executive summary: Binary heaps outperform Fibonacci in most real-world applications, unless the underlying graph is very dense. This is basically because a binary heap can be efficiently implemented using an array, but a Fibonacci heap is implemented as a system of pointers. Commented Oct 8, 2010 at 19:51
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    @devnull: it is way to broad by today's site standards. I've re-closed it to reflect that. Commented Dec 18, 2017 at 19:29