Exceptions-agnostic: exception handling is not provided by the language but can be implemented (usually with conditional statements and gotos).Exceptions that are not handled lead to an abortion of the application at run time. Weak exception handling: everything that’s been said for the strict exception handling languages with the addition that developers are not required to handle exceptions and methods are not shipped with any definition of the exceptions they can rise demanding this task to the documentation.Not handled exceptions lead to a compile-time error. Methods are shipped with a list of exceptions they can rise (explicitely or just by invoking other functions) and require to be handled with a Try.catch-like construct. Exceptions are defined as classes (either built-in and defined by the developer) that represent the type of exception they handle. Strict exception handling: the language provides full and explicit coverage to exceptions.We could split programming languages into four categories based on the way they handle exceptions: How popular languages deal with exceptions

The main difference here is that errors are unexpected (and usually lead to exploitable bugs) and are often hard to predict (did someone whisper overflow?), while exceptions are expected (you know that they could happen) and usually lead to a crash of the application when not handled (for example when you want to modify a file that actually does not exist but you didn’t think about this possibility). out of memory).Įxception: An expected and irregular situation that happens at runtime (i.e.

General definitionsĮrror: An unusual and unexpected situation in the running program that can be resolved only by fixing the program (i.e. An introduction to errors and exceptions handling using Rust as example.

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