New Core Tutorial

git-svn-id: svn://ultimatepp.org/upp/trunk@10538 f0d560ea-af0d-0410-9eb7-867de7ffcac7

tutorial/CoreTutorial/WString.cpp

@@ -0,0 +1,33 @@
+#include "Tutorial.h"
+
+void WStringTutorial()
+{
+	/// .WString
+
+	/// String works with 8 bit characters. For 16-bit character encoding use `WString`. Both
+	/// classes are closely related and share most of interface methods. U++ also provides
+	/// conversions between `String` and `WString` and you can also use 8 bit string literals with
+	/// `WString`. Conversion is ruled by current default character set. Default value of default
+	/// character set is `CHARSET_UTF8`. This conversion is also used in `WString::ToString`,
+	/// e.g. when putting `WString` to log:
+
+	WString x = "characters 280-300: "; // you can assign 8-bit character literal to WString
+	for(int i = 280; i < 300; i++)
+		x.Cat(i);
+	
+	DUMP(x);
+	
+	/// `ToString` converts `WString` to `String`:
+
+	String y = x.ToString();
+	DUMP(y);
+
+	/// `ToWString` converts `String` to `WString`:
+
+	y.Cat(" (appended)"); // you can use 8-bit character literals in most WString operations
+	x = y.ToWString();
+	
+	DUMP(x);
+	
+	///
+}