array::if_contains

`array::if_contains`

Return a pointer to an element if it exists.

value const*
if_contains(
    std::size_t pos) const noexcept; (1)

value*
if_contains(
    std::size_t pos) noexcept; (2)

This function returns a pointer to the element at index pos when the index is less then the size of the container. Otherwise it returns null.

if( auto p = arr.if_contains( 1 ) )
    std::cout << *p;

Constant.

No-throw guarantee.

Name Description

Name	Description
`pos`	The index of the element to return.

pos

The index of the element to return.