March 2016
Intermediate to advanced
550 pages
10h 57m
English
Content preview from C# 6 and .NET Core 1.0Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 9 – Querying and Manipulating Data with LINQ
- What are the two requirements to use LINQ?
You must import the
System.Linqnamespace to make the LINQ extension methods available and reference a LINQ provider assembly for the type of data that you want to work with. - Which LINQ extension method would you use to return a subset of properties from a type?
The
Selectmethod allows projection (selection) of properties. - Which LINQ extension method would you use to filter results?
The
Wheremethod allows filtering by supplying a delegate (or lambda expression) that returns a Boolean to indicate whether the value should be included in the results. - List five LINQ extension methods that perform aggregation.
Max,Min,Count,Average,Sum, andAggregate. - What ...
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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.