Assertions

Assertions are statements or checks within a program that verify whether certain conditions are true at a specific point in the code. They are used by developers to catch errors early by ensuring that the program's assumptions hold. If the condition is false, the assertion typically prompts an error or halts the execution, helping identify bugs or logic issues during testing. Think of assertions as built-in guards or checkpoints that improve code reliability and make debugging easier by validating critical assumptions automatically.