Exception Handling
6 Topics
1
Try-Catch Blocks
Handle runtime errors gracefully with try, catch, and exception propagation mechanics.
Fundamental comparison of error-handling styles (error codes vs. exceptions), catching by reference, and polymorphic catch behavior.
2
Throwing Exceptions
Signal errors using the throw keyword, manage lifetime during stack unwinding, and understand rethrowing mechanics.
Stack unwinding behavior, destructor safety during unwinding, and the critical performance difference between throw; and throw e;.
3
Standard Exceptions
Explore the C++ standard library exception hierarchy, separating logic errors from runtime errors.
Differentiating between std::logic_error and std::runtime_error, and mapping common standard exceptions to their typical root causes.
4
Custom Exceptions
Design and implement custom exception classes by inheriting from std::exception, overriding virtual what() safely.
Designing robust custom error hierarchies, managing internal state (e.g. error codes) safely, and declaring what() as noexcept.
5
Exception Safety
Write robust code that handles exceptions without leaking resources or corrupting states using RAII and exception guarantees.
Understanding the three guarantees (basic, strong, no-throw), RAII as the base tool, and using copy-and-swap to implement the strong guarantee.
6
noexcept Specifier
Signal non-throwing behavior to the compiler and standard library containers to optimize move operations.
How noexcept optimizes std::vector resize, the difference between specifier and operator, and the consequences of throwing from noexcept.