January 2019
Intermediate to advanced
520 pages
14h 32m
English
Content preview from Hands-On Microservices with Rust
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Path for user management
The USER_PATH expression can fit the following paths:
- /user/
- /user/<id>, where <id> means group of digits
- /user/<id>/, the same as the previous one, but with a trailing backslash
These cases can be handled with the "^/user/((?P<user_id>\\d+?)/?)?$" regular expression. This expression is a bit complex. It includes two groups (one is nested) and some other strange characters. Let's have a closer look.
?P<name> is a grouping attribute that sets the name of the capturing group. Every group in brackets can be accessed by the regex::Captures object. Named groups can be accessed by names.
\\d is a special expression that matches any digit. To specify that we have one or more digits, we should add the + symbol, which tells ...
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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.