# GB.Error

    void * GB.Error ( const char * error , ... )

Tells the interpreter that the current method or property must raise an error.

error is a text describing the error. This text can contain substitution patterns : each '&n' pattern, n being in the 1...9 interval, will be replaced by the nth optional argument of `GB.Error`.

Be careful ! This functions does not send any exception. You must return explicitely after calling `GB.Error` if you want to abort the method or property.

Example

      /* This comes from implementation of Table.Fields.Find in the database component */

      BEGIN_METHOD(CFIELD_find, GB_STRING name)

        ...

        if (THIS->create
            || !THIS->driver->Field.Exist(THIS->db->handle, THIS->table, field))
        {
          GB.Error("Unknown field: &1.&2", THIS->table, field);
          return;
        }

        ...

      END_METHOD