September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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How are implicits resolved?
So far, we have declared implicit values and implicit conversions in the same scope as where they were used. But we can define them in other files too.
The Scala compiler has a set of rules to find implicit parameters or implicit conversions. The compiler goes through the following steps and adheres to the following rules:
- Look at the current scope as follows:
- Implicits defined in the current scope: These should be in the same function or class or object. This is how we defined it in the previous section.
- Explicit import: You can define an implicit value implValue in an object myObj, and bring it to the current scope with the statement import myObj.implValue.
- Wildcard import: import myObj._.
- Look at the associated ...
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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.
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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.