Class which contains fields, properties, methods to perform basic operations such as sum, average, max, min and sorting.
Functional method extensions
Class that holds the information of the group like key, count, items and etc.
Determines the set of properties and their information.
Class that provides the extension methods for the property info.
Provides extension methods for Queryable source.
var fonts = FontFamily.Families.AsQueryable();
We would normally write Expressions as,
This would sort the names based on alphabetical order. Like so, the Queryable extensions are a set of extension methods that define functions which will generate expressions based on the supplied values to the functions.