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## Function template flat_map

boost::container::flat_map

## Synopsis

    // In header: <boost/container/flat_map.hpp>

    template<typename InputIterator>  flat_map(InputIterator, InputIterator);

## Description

Deduction guide: allows a `flat_map` to be constructed from the iterator range `[first, last)`, deducing the key and mapped types from the pair value type of `InputIterator` and using the default comparator and allocator.