Luna::copy_assign_range

template <typename _Iter1, typename _Iter2>
auto copy_assign_range(_Iter1 first, _Iter1 last, _Iter2 d_first) -> enable_if_t<!Impl::copy_assign_range_is_value_type_trivial< _Iter1, _Iter2 >::value, _Iter2 >

Performs copy assignment operation on every object in the destination range using the corresponding object in the source range.

Parameters

• in first

  An iterator to the first object to be copied from.

• in last

  An iterator to one-past-last object to be copied from.

• in d_first

  An iterator to the first object to be assigned.

Return value

Returns an iterator to the one-past-last object to be assigned.

Valid Usage

• The source range and the destination range must not overlap.

Remark

memcpy is used to copy the data directly if:1. Both _Iter1 and _Iter2 are pointer types.

1. value_type of _Iter1 and _Iter2 is same.

2. value_type is trivially copy assignable. Otherwise, the copy assignment operator is called for every object to copy assign objects in destination range.