C++ 20 (2a) New Features - Usage of <=> Operator and How to Make Comparisons

The video tutorial explores the usage of the three-way comparison operator, also known as the spaceship operator, in C++. It begins with an introduction to the operator and its application in code, followed by a detailed explanation of comparison logic. The tutorial then demonstrates switching from integer to float types, highlighting the change from strong to partial ordering. Finally, it discusses performance considerations and hints at future videos covering more advanced topics.

What is the primary reason for not using the FMT library in the tutorial?

• The tutorial focuses on using 'cout' for simplicity.

• The FMT library is incompatible with the spaceship operator.

• GCC 10 and the experimental version are not stable enough.

• The FMT library is outdated.

How can you determine if a value on the left side is less than the value on the right side using the spaceship operator?

• By checking if the result is less than 0.

• By comparing the result to a literal 1.

• By checking if the result is greater than 0.

• By comparing the result to a literal -1.

What does strong ordering imply in the context of the three-way comparison operator?

• None of the comparisons can return true.

• All comparisons must return false.

• At least one comparison must return true.

• All comparisons must return true.

What change occurs when switching from integer to float comparisons using the spaceship operator?

• The operator becomes incompatible with floats.

• The ordering changes from partial to strong.

• The operator requires additional parameters.

• The ordering changes from strong to partial.

What does partial ordering mean when comparing float values?

• All comparisons must result in a value of 0.

• Some comparisons may not result in a value of 0.

• All comparisons must result in a non-zero value.

• Partial ordering is not applicable to float values.