September 2019
Beginner
512 pages
12h 52m
English
Content preview from Flutter for Beginners
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The version constraint
The version constraint can be a concrete version number, a range, or a minimum or maximum constraint. Let's explore how it looks in each situation:
- Any/empty: Like the previous example, we can use this without a version constraint, for example, json_serializable: or json_serializable: any.
- Concrete version: We can add the specific version number we want to work with, for example, json_serializable: 2.0.1.
- Minimal bound: Here, we can add a minimum acceptable version of the package we want in two ways: json_serializable: '>1.0.0', where we accept any version later than the specified version (excluding the specified one), or json_serializable: '>=1.0.0', where we accept any version above or equal to the specified version. ...
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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.