[boost] [assign] documentation - bugs in examples

From: Anton Gutsunaev (toto.lists_at_[hidden])
Date: 2004-11-21 07:54:04

Some examples in <boost>/libs/assign/doc/index.html file print "Assertion failed" message or cannot be compiled.

<boost>/libs/assign/doc/index.html#operator+=

  vector<int> values;  
  values += 1,2,3,4,5,6,7,8,9; // insert values at the end of the container
  BOOST_ASSERT( values.size() == 9 );
  BOOST_ASSERT( values[0] == 1 );
  BOOST_ASSERT( values[9] == 9 );// <---must be "values[8]"

<boost>/libs/assign/doc/index.html#operator()

  map<string,int> months;  
  insert( months )
      ( "january",   31 )( "february", 28 )
      ( "march",     31 )( "april",    30 )
      ( "may",       31 )( "june",     30 )
      ( "july",      31 )( "august",   31 )
      ( "september", 30 )( "october",  31 )
      ( "november",  30 )( "december", 31 );
  BOOST_ASSERT( m.size() == 12 );     //<---change "m" to "months"
  BOOST_ASSERT( m["january"] == 31 ); //<---same here

after words "If operator()() is too cumbersome to use with eg. push_front()we can also say":

  deque<int> di;    
  push_front( di ) = 1,2,3,4,5,6,7,8,9;
  BOOST_ASSERT( di.size() == 9 );    
  BOOST_ASSERT( di[8] == 9 );//<-- must be di[8]==1 or di[0]==9 because of push_front

<boost>/libs/assign/doc/index.html#list_of:

  const stack<string> names = list_of( "Mr. Foo" )( "Mr. Bar")( "Mrs. FooBar" ).to_adapter();
  const stack<string> names2 = (list_of( "Mr. Foo" ), "Mr. Bar", "Mrs. FooBar" ).to_adapter();
  BOOST_ASSERT( names.size() == 3 );
  BOOST_ASSERT( names[0] == "Mr. Foo" );     //<---can't use operator [] with stack
  BOOST_ASSERT( names[2] == "Mrs. FooBar" ); //<---same here

example after words "A more general list can be constructed with repeat_fun()":
    
  template< class T >
  struct next    
  {
    T seed;                
    next( T seed ) : seed(seed) 
    { }
    T operator()() const //<---remove const or declare "T seed" as mutable
    {
      return seed++;
    }
  };