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##### row::front

Returns the first element in the row.

###### Synopsis

    field_view
    front() const noexcept;

###### Preconditions

`this->size() > 0`

###### Exception safety

No-throw guarantee.

###### Complexity

Constant.

Copyright © 2019-2024 Ruben Perez

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)