Building a .NET Standard 2.0 library that uses LINQ

In this recipe, we will be using LINQ inside our .NET Standard 2.0 library. LINQ stands for .NET Language-Integrated Query. LINQ defines a set of general purpose standard query operators: list, select, sort, and projection operators in any .NET-based programming language. The standard query operators allow queries to be applied to any IEnumerable<T>—based information source. 

We will be building a .NET Standard 2.0 library that utilizes LINQ and use the library in the next recipe. 

Getting ready

Let's get prepared by opening Visual Studio 2017 and creating a .NET Standard 2.0 library-based project. We can start with a blank solution and later on add the library project. 

How to do it...

1. Open Visual Studio 2017.
2. Click File | New | Project and, in the New Project template dialog box, select Visual Studio Solutions under the Other Project Types node in the left-hand pane and then Blank Solution in the right-hand pane.
3. In the Name: text box...