C++ 20 (2a) New Features - Returning Value of the Spaceship Operator

The video tutorial explains the spaceship operator and its ability to return different types of ordering: strong, weak, and partial. Strong ordering includes less, equivalent, equal, and greater, with equivalent and equal being the same. Weak ordering lacks equal and is used for case-insensitive comparisons. Partial ordering includes less, equivalent, greater, and unordered, with unordered meaning no comparison is true. Strong and weak orderings can be converted to partial ordering, but not vice versa. These orderings are mainly used in generic programming and can be compared to literal 0.

What are the four member constants of strong ordering?

• Less, Equal, Greater, Unordered

• Less, Equivalent, Greater, Unordered

• Less, Greater, Unordered, Equivalent

• Less, Equivalent, Equal, Greater

How does weak ordering differ from strong ordering?

• Weak ordering lacks the 'equal' constant and uses 'equivalent' instead.

• Weak ordering cannot compare strings.

• Weak ordering includes the 'equal' constant.

• Weak ordering is not convertible to partial ordering.

In what scenario is weak ordering particularly useful?

• Comparing unordered data types

• Comparing numbers with precision

• Case-insensitive string comparisons

• Sorting unordered lists

What does 'unordered' mean in partial ordering?

• No comparison is true

• All comparisons are true

• Equivalent to 'equal'

• Only 'less' and 'greater' are true

Which ordering type cannot be implicitly converted to another?

• Strong ordering

• Partial ordering

• Weak ordering

• All can be converted