Initial commit

vscode/Chapter08/WorkingWithRanges/Program.cs

@@ -0,0 +1,28 @@
+string name = "Samantha Jones";
+
+// getting the lengths of the first and last names
+
+int lengthOfFirst = name.IndexOf(' ');
+int lengthOfLast = name.Length - lengthOfFirst - 1;
+
+// Using Substring
+
+string firstName = name.Substring(
+  startIndex: 0,
+  length: lengthOfFirst);
+
+string lastName = name.Substring(
+  startIndex: name.Length - lengthOfLast,
+  length: lengthOfLast);
+
+WriteLine($"First name: {firstName}, Last name: {lastName}");
+
+// Using spans
+
+ReadOnlySpan<char> nameAsSpan = name.AsSpan();
+ReadOnlySpan<char> firstNameSpan = nameAsSpan[0..lengthOfFirst];
+ReadOnlySpan<char> lastNameSpan = nameAsSpan[^lengthOfLast..^0];
+
+WriteLine("First name: {0}, Last name: {1}",
+  arg0: firstNameSpan.ToString(),
+  arg1: lastNameSpan.ToString());