Exception Handler in a sentence

Exception handling is commonly not resumable in those languages, and when an exception is thrown, the program searches back through the stack of function calls until an exception handler is found.

A few languages like AppleScript incorporate placeholders in the exception handler syntax for automatically extracting several pieces of information when the exception occurs.

In general, an exception is handled (resolved) by saving the current state of execution in a predefined place and switching the execution to a specific subroutine known as an exception handler.

Many languages allow a function called an exception handler to be written to handle this exception and, for example, always return "-1" as the result.

Some other languages like Ada use the keyword exception to introduce an exception handler and then may even employ a different keyword ( when in Ada) for the pattern matching.

This default uncaught exception handler may be overridden, either globally or per-thread, for example to provide alternative logging or end-user reporting of uncaught exceptions, or to restart threads that terminate due to an uncaught exception.

We can ensure that all unhandled exceptions are caught by using a global exception handler.

An Eiffel exception handler is defined using the rescue keyword.

As this was an exception handler, heavy use of the transcendental functions caused severe performance penalties.

Common Lisp calls the exception handler and does not unwind the stack.

In those languages or environments the advent of a condition (a "generalisation of an error" according to Kent Pitman ) implies a function call, and only late in the exception handler the decision to unwind the stack may be taken.