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## Function template operator<

boost::operator< — Compare two `circular_buffer`s element-by-element to determine if the left one is lesser than the right one.

## Synopsis

    // In header: <boost/circular_buffer/base.hpp>

    template<typename T, typename Alloc>
      bool operator<(const circular_buffer< T, Alloc > & lhs,
                     const circular_buffer< T, Alloc > & rhs);

## Description

Complexity. Linear (in the size of the `circular_buffer`s).

Iterator Invalidation. Does not invalidate any iterators.

Parameters: |
`lhs` | The `circular_buffer` to compare.
`rhs` | The `circular_buffer` to compare.
Returns: | `std::lexicographical_compare(lhs.begin(), lhs.end(), rhs.begin(), rhs.end())`
Throws: | Nothing.