October 2019
Intermediate to advanced
444 pages
10h 37m
English
Content preview from Rust Programming Cookbook
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Working with exceptional results
Other than the Option type, a Result type can have two custom types, which means that Result provides additional information about the cause of the error. This is more expressive than returning Option, which returns a single type instance or None. However, this None instance can mean anything from failure to process to wrong input. This way, the Result type can be seen as a similar system as exceptions in other languages, but they are part of the regular workflow of a program. One example is a search, where a multitude of scenarios can happen:
- The desired value is found.
- The desired value is not found.
- The collection was invalid.
- The value was invalid.
How can you use the Result type effectively? Let's ...
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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.