Initial commit

2019-11-15 12:59:38 +01:00
parent 40a414d210
commit b880c3ccde
6814 changed files with 379441 additions and 0 deletions
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+Fig01_19.cpp - MemoryCell class template without separation
+	
+	#include <iostream.h>
+        #include "mystring.h"
+
+
+        /**
+         * A class for simulating a memory cell.
+         */
+        template <class Object>
+        class MemoryCell
+        {
+          public:
+            explicit MemoryCell( const Object & initialValue = Object( ) )
+              : storedValue( initialValue ) { }
+            const Object & read( ) const
+              { return storedValue; }
+            void write( const Object & x )
+              { storedValue = x; }
+          private:
+            Object storedValue;
+        };
+
+        // OOPS: I forgot to put a + operator in the string class.
+        // So it's here:
+
+        string operator+( const string & lhs, const string & rhs )
+        {
+            string result = lhs;
+            return result += rhs;
+            
+        }
+
+        int main( )
+        {
+            MemoryCell<int>    m1;
+            MemoryCell<string> m2( "hello" );
+
+            m1.write( 37 );
+            m2.write( m2.read( ) + " world" );
+            cout << m1.read( ) << endl << m2.read( ) << endl;
+
+            return 0;
+        }