Update README

README.md

@@ -331,7 +331,44 @@ the minimum information of its interface needed.
 
 We can also see in this example so the container ARRAY provides also
 a macro to define the oplist of the array itself. This is true for
-all containers and this allows to define proper recursive container.
+all containers and this allows to define proper recursive container like in this example:
+
+        #include <stdio.h>
+        #include "m-array.h"
+        #include "m-tuple.h"
+        #include "m-dict.h"
+        #include "m-string.h"
+        
+        TUPLE_DEF2(symbol, (offset, long), (value, long))
+        #define M_OPL_symbol_t() TUPLE_OPLIST(symbol, M_DEFAULT_OPLIST, M_DEFAULT_OPLIST)
+        
+        ARRAY_DEF(array_symbol, symbol_t)
+        #define M_OPL_array_symbol_t() ARRAY_OPLIST(array_symbol, M_OPL_symbol_t())
+        
+        DICT_DEF2(sections, string_t, array_symbol_t)
+        #define M_OPL_sections_t() DICT_OPLIST(sections, STRING_OPLIST, M_OPL_array_symbol_t())
+        
+        int main(int argc, const char *argv[])
+        {
+          if (argc < 2) abort();
+          FILE *f = fopen(argv[1], "rt");
+          if (!f) abort();
+          M_LET(sc, sections_t) {
+            sections_in_str(sc, f);
+            array_symbol_t *a = sections_get(sc, STRING_CTE(".text"));
+            if (a == NULL) {
+              printf("There is no .text section.");
+            } else {
+              printf("Section .text is :");
+              array_symbol_out_str(stdout, *a);
+              printf("\n");
+            }
+          }
+          return 0;
+        }
+
+This example reads the data from a file
+and outputs the .text section if it finds it on the terminal.
 
 Other examples are available in the example folder.