Element access

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#### Element access

##### Description

The TR1 Tuple provides the `get` function to provide access to it's elements by zero based numeric index.

##### Specification

    template<int I, T>
    RJ get(T& t);

Requires: `0 < I <= N`. The program is ill formed if `I` is out of bounds. `T` is any fusion sequence type, including `tuple`.

Return type: `RJ` is equivalent to ``result_of::at_c`<I,T>::type`.

Returns: A reference to the `I`th element of `T`.

    template<int I, typename T>
    PJ get(T const& t);

Requires: `0 < I <= N`. The program is ill formed if `I` is out of bounds. `T` is any fusion sequence type, including `tuple`.

Return type: `PJ` is equivalent to ``result_of::at_c`<I,T>::type`.

Returns: A const reference to the `I`th element of `T`.