The changes that C# 7.0 has made to out variables are not major. They are, however, a major convenience to those developers who use it often. So far in this chapter, we have seen the use of Tuples, pattern matching, and out variables. We can easily combine some of what we have learned to create something truly unique. Consider the use of extension methods, Tuples, and out variables. We can easily create an extension method called ToInt() that has the following implementation:
public static (string originalValue, int integerValue, bool isInteger) ToInt(this string stringValue){ var t = (original: stringValue, toIntegerValue: 0, isInt: false); if (int.TryParse(stringValue, out var iValue)) { t.toIntegerValue = iValue; t.isInt ...
