In this chapter, you learned how to write queries using query syntax. You created a decimal salary array, worked with range variables, observed deferred execution, made a dictionary, worked with key-value pairs, queried the data in the key-value pairs, and learned about implicit typing.
In the next chapter, we will explore LINQ further. Specifically, we'll take a look at some of the power of LINQ to perform aggregation functions, such as averaging, summation, and counting. Also, we'll talk about lists of lists, which are very practical thing.