September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Handling Errors
In this chapter, we will continue working on the retirement calculator that we implemented in Chapter 2, Developing a Retirement Calculator. Our calculator worked correctly as long as we passed the right arguments, but would fail badly with a horrible stack trace if any of the parameters were wrong. Our program only worked for what we call the happy path.
The reality of writing production software is that all kinds of error scenarios can occur. Some of them are recoverable, some of them must be presented to the user in an attractive way, and, for some hardware-related errors, we might need to let the program crash.
In this chapter, we will introduce exception handling, explain what referential transparency is, and try to convince ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.