John H. Brennan
Louis Philippe Dandenault

Learning Scala by Jason Swartz


Learning Scala by Jason Swartz

Author:Jason Swartz
Language: eng
Format: epub
Tags: COMPUTERS / Programming Languages / Java
ISBN: 9781449367923
Publisher: O’Reilly Media
Published: 2014-12-11T05:00:00+00:00


Match expressions

nextError match { case util.Success(x) => x; case util.Failure(error) => -1 }

Use a match expression to handle a Success with a return value (stored in “x”) or a Failure with an exception (stored in “error”). Not shown: logging the error with a good logging framework, ensuring it gets noticed and tracked.

Do nothing

nextError

This is the easiest error-handling method of all and a personal favorite of mine. To use this method, simply allow the exception to propagate up the call stack until it gets caught or causes the current application to exit. This method may be too disruptive for certain sensitive cases, but ensures that thrown exceptions will never be ignored.



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