Updated the examples to use dlib::sa rather than string_cast.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403878

examples/bayes_net_gui_ex.cpp

@@ -661,7 +661,7 @@ on_sel_node_evidence_modified (
     {
         // get the numerical value of the new evidence value.  Here we are taking
         // the string from the text field and casting it to an unsigned long.
-        value = string_cast<unsigned long>(trim(sel_node_evidence.text()));
+        value = sa = trim(sel_node_evidence.text());
     }
     catch (string_cast_error&)
     {
@@ -704,7 +704,7 @@ on_sel_node_num_values_modified (
     try
     {
         // get the number of values out of the text field.  
-        num_values = string_cast<unsigned long>(trim(sel_node_num_values.text()));
+        num_values = sa = trim(sel_node_num_values.text());
     }
     catch (string_cast_error&)
     {
@@ -756,7 +756,7 @@ on_cpt_grid_modified(unsigned long row, unsigned long col)
     try
     {
         // get the new value out of the table
-        prob = string_cast<double>(cpt_grid.text(row,col));
+        prob = sa = cpt_grid.text(row,col);
     }
     catch (string_cast_error&)
     {

examples/compress_stream_ex.cpp

@@ -84,7 +84,7 @@ int main(int argc, char** argv)
         parser.check_incompatible_options("c", "d");
 
         // Here I'm checking that the argument to the l option is an integer in the range 1 to 3.  
-        // That is, it should be convertible to an int by dlib::string_cast<int>() and be either 
+        // That is, it should be convertible to an int by dlib::string_assign and be either 
         // 1, 2, or 3.  Note that if you wanted to allow floating point values in the range 1 to 
         // 3 then you could give a range 1.0 to 3.0 or explicitly supply a type of float or double 
         // to the template argument of the check_option_arg_range() function.
@@ -119,8 +119,10 @@ int main(int argc, char** argv)
         // Figure out what the compression level should be.  The default is 2.
         int compression_level = 2;
         // If the user supplied the -l option then use whatever value they gave for the level.
+        // Note that we use the string_assign object, sa, to convert the string returned
+        // by argument() to an int.
         if (parser.option("l"))
-            compression_level = string_cast<int>(parser.option("l").argument());
+            compression_level = sa = parser.option("l").argument();
 
 
 

examples/config_reader_ex.cpp

@@ -99,11 +99,13 @@ int main()
         cout << cr.block("user1").block("details")["editor"] << endl;
 
         
-        // Note that you can use the string_cast function to easily convert fields 
+        // Note that you can use the string_assign object, sa, to easily convert fields 
         // into non-string types.  For example, the config file has an integer id 
         // field that could be converted into an int like so:
-        int id = string_cast<int>(cr.block("user2")["id"]);
-        cout << "user2's id is " << id << endl;
+        int id1 = sa = cr.block("user1")["id"];
+        int id2 = sa = cr.block("user2")["id"];
+        cout << "user1's id is " << id1 << endl;
+        cout << "user2's id is " << id2 << endl;
 
     }
     catch (exception& e)