O(n) Yield Just the index of the first occurrence of
the given element or Nothing if the vector does not contain
the element. This is a specialised version of findIndex.
O(n) Yield Just the index of the first occurrence of the
given element or Nothing if the vector does not contain the
element. This is a specialised version of findIndex.
O(n) Yield Just the index of the first occurrence of
the given element or Nothing if the vector does not contain
the element. This is a specialised version of findIndex.
O(n) Yield Just the index of the first occurrence of
the given element or Nothing if the vector does not contain
the element. This is a specialised version of findIndex.
O(n) Yield Just the index of the first occurrence of
the given element or Nothing if the vector does not contain
the element. This is a specialised version of findIndex.