Basic exception safety
Basic exception safety, colloquially termed the guarantee, pledges that your program won’t leak resources when an exception occurs and its invariants are preserved. Simply put, the software won’t devolve into chaos. When unforeseen exceptions occur, the operation might fail, but your application continues functioning, and no data gets mangled.
Two real-world examples of unforeseen exceptions that can be effectively managed without causing resource leaks or data corruption include the following:
- File operation failure during data processing: Consider an application that processes large data files. During this process, the application might encounter an unexpected exception, such as a failure to read a portion of the file due to disk I/O errors. In this case, basic exception safety ensures the application does not leak resources (such as file handles or memory allocated for data processing). It maintains the integrity of any data structures...
