boost::redis::resp3::flat_tree::at :: Boost.Redis

# boost::redis::resp3::flat_tree::at

Returns a reference to the node at the specified position (checked access).

## Synopsis

Declared in `<boost/redis/resp3/flat_tree.hpp>`

    node_view const&
    at(std::size_t i) const;

## Exception safety

Strong guarantee. Throws `std::out_of_range` if `i >= size()`.

## Return Value

A reference to the node at position `i`.

## Parameters

Name | Description
--- | ---
i | Position of the node to return.

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