## SmartPtr::operator[] method


Accessor for array elements. Only compiles if SmartPtr_ is specialization of [System::Array](../../array/).

```cpp
template<typename IdxType> decltype(System::Details::GetByIndex(std::declval<const SmartPtr_ *>(), std::declval<IdxType>())) System::SmartPtr<T>::operator[](IdxType idx) const
```


| Parameter | Description |
| --- | --- |
| IdxType | Type of index (assumed integral). |

| Parameter | Type | Description |
| --- | --- | --- |
| idx | IdxType | Index in array. |

### ReturnValue

[Array](../../array/) value at idx position.

## See Also

* Typedef [SmartPtr_](../smartptr_/)
* Class [SmartPtr](../)
* Namespace [System](../../)
* Library [Aspose.PUB for C++](../../../)