Multi-Paradigm Programming with Modern C++ - Task Continuation

The video tutorial explains the concept of continuation in task-based programming, which allows for creating a chain of tasks where each task consumes the result of the previous one. It covers the implementation of continuation tasks, including syntax design, exception handling, and task scheduling. The tutorial also discusses how to handle task completion and propagate exceptions through the task chain, ensuring that exceptions are caught and managed effectively.

What is the primary purpose of continuation tasks?

• To execute tasks in parallel without dependencies

• To create a sequence of tasks where each task uses the result of the previous one

• To handle exceptions in a task chain

• To manually wait for each task to finish before starting the next

How does the 'then' function contribute to continuation tasks?

• It allows tasks to be executed in parallel

• It schedules a new task to execute after the current one finishes

• It handles exceptions in the task chain

• It cancels the execution of the current task

What is a key challenge when implementing continuation tasks?

• Avoiding the use of mutexes

• Ensuring tasks are executed in parallel

• Handling tasks that finish quickly and require immediate scheduling

• Manually passing results between tasks

Why is an executor important in the context of continuation tasks?

• It cancels tasks that take too long to execute

• It handles exceptions in the task chain

• It ensures tasks are scheduled correctly, even if they finish quickly

• It allows tasks to be executed in parallel

How are exceptions managed in continuation tasks?

• They are ignored and not propagated

• They are propagated through the task chain using promises and futures

• They are caught and logged without affecting the task chain

• They cause the entire task chain to stop immediately

What role do promises and futures play in exception handling?

• They cancel tasks that throw exceptions

• They allow tasks to execute in parallel

• They prevent exceptions from being thrown

• They ensure exceptions are propagated and caught by the caller

What happens if a task in the chain throws an exception?

• The exception is ignored and the task chain continues

• The exception is propagated through the chain and caught by the caller

• The task chain stops immediately

• The exception is logged but not propagated