| [section:make_heap make_heap] |
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| [heading Prototype] |
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| `` |
| template<class RandomAccessRange> |
| RandomAccessRange& make_heap(RandomAccessRange& rng); |
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| template<class RandomAccessRange> |
| const RandomAccessRange& make_heap(const RandomAccessRange& rng); |
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| template<class RandomAccessRange, class Compare> |
| RandomAccessRange& make_heap(RandomAccessRange& rng, Compare pred); |
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| template<class RandomAccessRange, class Compare> |
| const RandomAccessRange& make_heap(const RandomAccessRange& rng, Compare pred); |
| `` |
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| [heading Description] |
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| `make_heap` turns `rng` into a heap. |
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| The ordering relationship is determined by using `operator<` in the non-predicate versions, and by evaluating `pred` in the predicate versions. |
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| [heading Definition] |
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| Defined in the header file `boost/range/algorithm/heap_algorithm.hpp` |
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| [heading Requirements] |
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| [*For the non-predicate versions:] |
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| * `RandomAccessRange` is a model of the __random_access_range__ Concept. |
| * `RandomAccessRange` is mutable. |
| * `RandomAccessRange`'s value type is a model of the `LessThanComparableConcept`. |
| * The ordering of objects of type `RandomAccessRange`'s value type is a [*/strict weak ordering/], as defined in the `LessThanComparableConcept` requirements. |
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| [*For the predicate versions:] |
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| * `RandomAccessRange` is a model of the __random_access_range__ Concept. |
| * `RandomAccessRange` is mutable. |
| * `Compare` is a model of the `StrictWeakOrderingConcept`. |
| * `RandomAccessRange`'s value type is convertible to both of `Compare`'s argument types. |
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| [heading Complexity] |
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| Linear. At most `3 * distance(rng)` comparisons. |
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| [endsect] |
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