Ruby resume exception

An exception is a special kind of object, an instance of the class Exception or a descendant of that class that represents some kind of exceptional condition; it indicates that something has gone wrong. When this occurs, an exception is raised or thrown. By default, Ruby programs terminate when an exception occurs. But it is possible to declare exception handlers. An exception handler is a block of code that is executed if an exception occurs during the execution of some other block of code. Raising an exception means stopping normal execution of the program and transferring the flow-of-control to the exception handling code where you either deal with the problem that's been encountered or exit the program completely.
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Programming Ruby

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Handle Signals and Exceptions

Want to write better code? Check out our free transaction tracing tool, Prefix! Exceptions are a commonly used feature in the Ruby programming language. The Ruby standard library defines about 30 different subclasses of exceptions, some of which have their own subclasses. The exception mechanism in Ruby is very powerful but often misused. This article will discuss the use of exceptions and show some examples of how to deal with them.
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How to Rescue Exceptions in Ruby

Resume code execution after an exception has been thrown can be very useful in several different scenarios i. First we define our exception class can be global — defined in DDIC or locally defined. Nothing special needs to be specified here. Here follows a demo program that calls the division operation in both resumable and non-resumable form:. This article has been taken from my blog at oprsteny.
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So far we're been developing code in Pleasantville, a wonderful place where nothing ever, ever goes wrong. Every library call succeeds, users never enter incorrect data, and resources are plentiful and cheap. Well, that's about to change. Welcome to the real world!
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