[/license

Boost.Bimap

Copyright (c) 2006-2007 Matias Capeletto

Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)

]

[/ QuickBook Document version 1.4 ]

[section list_of Reference]

[section Header "boost/bimap/list_of.hpp" synopsis]

    namespace boost {
    namespace bimaps {


    template< class KeyType >
    struct list_of;

    struct list_of_relation;


    } // namespace bimap
    } // namespace boost

[endsect]

[section list_of Views]

A list_of set view is a std::list signature compatible
interface to the underlying heap of elements contained in a `bimap`.

If you look the bimap by a side, you will use a map view and if you looked
it as a whole you will be using a set view.

Elements in a list_of view are by default sorted according to
their order of insertion: this means that new elements inserted through a
different view of the `bimap` are appended to the end of the
list_of view. Additionally, the view allows for free reordering of elements
in the same vein as `std::list` does. Validity of iterators and references to
elements is preserved in all operations.

There are a number of differences with respect to `std::lists`:

* list_of views are not
__SGI_ASSIGNABLE__ (like any other view.)
* Unlike as in `std::list`, insertions into a list_of view may fail due to
clashings with other views. This alters the semantics of the operations
provided with respect to their analogues in `std::list`.
* Elements in a list_of view are not mutable, and can only be changed
by means of `replace` and `modify` member functions.

Having these restrictions into account, list_of views are models of
__SGI_REVERSIBLE_CONTAINER__, __SGI_FRONT_INSERTION_SEQUENCE__ and
__SGI_BACK_INSERTION_SEQUENCE__.
We only provide descriptions of those types and operations that are either
not present in the concepts modeled or do not exactly conform to the
requirements for these types of containers.

    namespace boost {
    namespace bimaps {
    namespace views {

    template< ``['-implementation defined parameter list-]`` >
    class ``['-implementation defined view name-]``
    {
        public:

        // types

        typedef ``['-unspecified-]`` value_type;
        typedef ``['-unspecified-]`` allocator_type;
        typedef ``['-unspecified-]`` reference;
        typedef ``['-unspecified-]`` const_reference;
        typedef ``['-unspecified-]`` iterator;
        typedef ``['-unspecified-]`` const_iterator;
        typedef ``['-unspecified-]`` size_type;
        typedef ``['-unspecified-]`` difference_type;
        typedef ``['-unspecified-]`` pointer;
        typedef ``['-unspecified-]`` const_pointer;
        typedef ``['-unspecified-]`` reverse_iterator;
        typedef ``['-unspecified-]`` const_reverse_iterator;

        typedef ``['-unspecified-]`` info_type;

        // construct/copy/destroy

        this_type & operator=(const this_type & x);

        template< class InputIterator >
        void ``[link reference_list_of_assign_iterator_iterator assign]``(InputIterator first, InputIterator last);

        void ``[link reference_list_of_assign_size_value assign]``(size_type n, const value_type & value);

        allocator_type get_allocator() const;

        // iterators

        iterator               begin();
        const_iterator         begin() const;

        iterator               end();
        const_iterator         end() const;

        reverse_iterator       rbegin();
        const_reverse_iterator rbegin() const;

        reverse_iterator       rend();
        const_reverse_iterator rend() const;

        // capacity

        bool      empty() const;

        size_type size() const;

        size_type max_size() const;

        void ``[link reference_list_of_resize_size_value resize]``(size_type n, const value_type & x = value_type());

        // access

        const_reference front() const;
        const_reference back() const;

        // modifiers

        std::pair<iterator,bool> ``[link reference_list_of_push_front_value push_front]``(const value_type & x);
        void                     pop_front();

        std::pair<iterator,bool> ``[link reference_list_of_push_back_value push_back]``(const value_type & x);
        void                     pop_back();

        std::pair<iterator,bool> ``[link reference_list_of_insert_iterator_value insert]``(iterator position, const value_type & x);

        void ``[link reference_list_of_insert_iterator_size_value insert]``(iterator position, size_type n, const value_type & x);

        template< class InputIterator >
        void ``[link reference_list_of_insert_iterator_iterator_iterator insert]``(iterator position, InputIterator first, InputIterator last);

        iterator ``[link reference_list_of_erase_iterator erase]``(iterator position);
        iterator ``[link reference_list_of_erase_iterator_iterator erase]``(iterator first, iterator last);

        bool ``[link reference_list_of_replace_iterator_value replace]``(iterator position, const value_type & x);

        // Only in map views
        // {

          typedef ``['-unspecified-]`` key_type;
          typedef ``['-unspecified-]`` mapped_type;
          typedef ``['-unspecified-]`` mapped_type; // Equal to mapped_type

          template< class CompatibleKey >
          bool ``[link reference_list_of_replace_key_iterator_key replace_key]``(iterator position, const CompatibleKey & x);

          template< class CompatibleData >
          bool ``[link reference_list_of_replace_data_iterator_data replace_data]``(iterator position, const CompatibleData & x);

          template< class KeyModifier >
          bool ``[link reference_list_of_modify_key_iterator_modifier modify_key]``(iterator position, KeyModifier mod);

          template< class DataModifier >
          bool ``[link reference_list_of_modify_data_iterator_modifier modify_data]``(iterator position, DataModifier mod);

        // }


        void clear();

        // list operations

        void ``[link reference_list_of_splice_iterator_this splice]``(iterator position, this_type & x);
        void ``[link reference_list_of_splice_iterator_this_iterator splice]``(iterator position, this_type & x, iterator i);
        void splice(
            iterator position, this_type & x, iterator first, iterator last);

        void ``[link reference_list_of_remove_value remove]``(const value_type & value);

        template< class Predicate >
        void ``[link reference_list_of_remove_if_predicate remove_if]``(Predicate pred);

        void ``[link reference_list_of_unique unique]``();

        template< class BinaryPredicate >
        void ``[link reference_list_of_unique_predicate unique]``(BinaryPredicate binary_pred);

        void ``[link reference_list_of_merge_this merge]``(this_type & x);

        template< class Compare >
        void ``[link reference_list_of_merge_this_compare merge]``(this_type & x,Compare comp);

        void ``[link reference_list_of_sort sort]``();

        template< class Compare >
        void ``[link reference_list_of_sort_compare sort]``(Compare comp);

        void ``[link reference_list_of_reverse reverse]``();

        // rearrange operations

        void relocate(iterator position, iterator i);
        void relocate(iterator position, iterator first, iterator last);

    }

    // view comparison

    bool operator==(const this_type & v1, const this_type & v2 );
    bool operator< (const this_type & v1, const this_type & v2 );
    bool operator!=(const this_type & v1, const this_type & v2 );
    bool operator> (const this_type & v1, const this_type & v2 );
    bool operator>=(const this_type & v1, const this_type & v2 );
    bool operator<=(const this_type & v1, const this_type & v2 );

    } // namespace views
    } // namespace bimap
    } // namespace boost

In the case of a `bimap< list_of<Left>, ... >`

In the set view:

    typedef signature-compatible with relation< Left, ... > key_type;
    typedef signature-compatible with relation< Left, ... > value_type;

In the left map view:

    typedef  Left  key_type;
    typedef  ...   mapped_type;

    typedef signature-compatible with std::pair< Left, ... > value_type;

In the right map view:

    typedef  ...  key_type;
    typedef  Left mapped_type;

    typedef signature-compatible with std::pair< ... , Left > value_type;


[#list_of_complexity_signature]

[section Complexity signature]

Here and in the descriptions of operations of `list_of` views, we adopt the
scheme outlined in the
[link complexity_signature_explanation complexity signature section].
The complexity signature of a `list_of` view is:

* copying: `c(n) = n * log(n)`,
* insertion: `i(n) = 1` (constant),
* hinted insertion: `h(n) = 1` (constant),
* deletion: `d(n) = 1` (constant),
* replacement: `r(n) = 1` (constant),
* modifying: `m(n) = 1` (constant).

[endsect]

[section Instantiation types]

`list_of` views are instantiated internally to `bimap` and specified
by means of the collection type specifiers and the bimap itself.
Instantiations are dependent on the following types:

* `Value` from `list_of`,
* `Allocator` from `bimap`,

[endsect]

[section Constructors, copy and assignment]

As explained in the view concepts section, views do not have public
constructors or destructors. Assignment, on the other hand, is provided.

    this_type & operator=(const this_type & x);

* [*Effects: ] `a = b;`
where a and b are the `bimap` objects to which `*this` and `x` belong,
respectively.
* [*Returns: ] `*this`.


[#reference_list_of_assign_iterator_iterator]

    template< class InputIterator >
    void assign(InputIterator first, InputIterator last);

* [*Requires: ] `InputIterator` is a model of __SGI_INPUT_ITERATOR__ over elements of type
`value_type` or a type convertible to `value_type`. first and last are not
iterators into any views of the `bimap` to which this view belongs.
`last` is reachable from `first`.
* [*Effects: ] `clear(); insert(end(),first,last);`


[#reference_list_of_assign_size_value]

    void assign(size_type n, const value_type & value);

* [*Effects: ] `clear(); for(size_type i = 0; i < n ; ++n) push_back(v);`


[endsect]

[section Capacity operations]

[#reference_list_of_resize_size_value]

    void resize(size_type n,const value_type& x=value_type()); 

* [*Effects: ]
`if( n > size() ) insert(end(), n - size(), x);`
`else if( n < size() ) {`
`    iterator it = begin();`
`    std::advance(it, n);`
`    erase(it, end());`
`}`
* [*Note:] If an expansion is requested, the size of the view is not
guaranteed to be n after this operation (other views may ban insertions.)

[endsect]

[section Modifiers]

[#reference_list_of_push_front_value]

    std::pair<iterator,bool> push_front(const value_type& x);

* [*Effects:] Inserts `x` at the beginning of the sequence if no other views
of the `bimap` bans the insertion.
* [*Returns:] The return value is a pair `p`. `p.second` is `true` if and only
if insertion took place. On successful insertion, `p.first` points to the element
inserted; otherwise, `p.first` points to an element that caused the insertion to be
banned. Note that more than one element can be causing insertion not to be allowed.
* [link list_of_complexity_signature [*Complexity:]] O(I(n)).
* [*Exception safety:] Strong.


[#reference_list_of_push_back_value]

    std::pair<iterator,bool> push_back(const value_type & x);

* [*Effects:] Inserts `x` at the end of the sequence if no other views of the
`bimap` bans the insertion.
* [*Returns:] The return value is a pair `p`. `p.second` is `true` if and only if
insertion took place. On successful insertion, `p.first` points to the element
inserted; otherwise, `p.first` points to an element that caused the insertion
to be banned. Note that more than one element can be causing insertion not
to be allowed.
* [link list_of_complexity_signature [*Complexity:]] O(I(n)).
* [*Exception safety:] Strong.


[#reference_list_of_insert_iterator_value]

    std::pair<iterator,bool> insert(iterator position, const value_type & x);

* [*Requires: ] `position` is a valid `iterator` of the view.
* [*Effects:] Inserts `x` before position if insertion is allowed by all other
views of the `bimap`.
* [*Returns:] The return value is a pair `p`. `p.second` is `true` if and only if
insertion took place. On successful insertion, `p.first` points to the element
inserted; otherwise, `p.first` points to an element that caused the insertion
to be banned. Note that more than one element can be causing insertion not
to be allowed.
* [link list_of_complexity_signature 
[*Complexity:]] O(I(n)).
* [*Exception safety:] Strong.


[#reference_list_of_insert_iterator_size_value]

    void insert(iterator position, size_type n, const value_type & x);

* [*Requires: ] `position` is a valid `iterator` of the view.
* [*Effects: ] `for(size_type i = 0; i < n; ++i) insert(position, x);`


[#reference_list_of_insert_iterator_iterator_iterator]

    template< class InputIterator>
    void insert(iterator position,InputIterator first,InputIterator last);

* [*Requires: ] `position` is a valid `iterator` of the view. `InputIterator` is
a model of __SGI_INPUT_ITERATOR__ over elements of type `value_type`.
`first` and `last` are not iterators into any view of the
`bimap` to which this view belongs. `last` is reachable from `first`.
* [*Effects: ] `while(first != last) insert(position, *first++);`
* [link list_of_complexity_signature 
[*Complexity:]] O(m*I(n+m)), where m is the number of elements in `[first,last)`.
* [*Exception safety:] Basic.


[#reference_list_of_erase_iterator]

    iterator erase(iterator position);

* [*Requires: ] `position` is a valid dereferenceable `iterator` of the view.
* [*Effects:] Deletes the element pointed to by `position`.
* [*Returns:] An iterator pointing to the element immediately following the
one that was deleted, or `end()` if no such element exists.
* [link list_of_complexity_signature 
[*Complexity:]] O(D(n)).
* [*Exception safety:] nothrow.


[#reference_list_of_erase_iterator_iterator]

    iterator erase(iterator first, iterator last); 

* [*Requires: ] `[first,last)` is a valid range of the view.
* [*Effects:] Deletes the elements in `[first,last)`.
* [*Returns: ] `last`.
* [link list_of_complexity_signature 
[*Complexity:]] O(m*D(n)), where m is the number of elements in `[first,last)`.
* [*Exception safety:] nothrow.


[#reference_list_of_replace_iterator_value]

    bool replace(iterator position,const value_type& x);

* [*Requires: ] `position` is a valid dereferenceable iterator of the view.
* [*Effects:] Assigns the value `x` to the element pointed to by `position` into
the `bimap` to which the view belongs if replacing is allowed by
all other views of the `bimap`.
* [*Postconditions:] Validity of `position` is preserved in all cases.
* [*Returns: ] `true` if the replacement took place, `false` otherwise.
* [link list_of_complexity_signature 
[*Complexity:]] O(R(n)).
* [*Exception safety:] Strong. If an exception is thrown by some user-provided
operation the `bimap` to which the view belongs remains in its
original state.


[#reference_list_of_replace_key_iterator_key]

    template< class CompatibleKey >
    bool replace_key(iterator position, const CompatibleKey & x);

* [*Requires: ] `position` is a valid dereferenceable iterator of the set view.
`CompatibleKey` can be assigned to `key_type`.
* [*Effects:] Assigns the value `x` to `e.first`, where `e` is the element pointed 
to by `position` into the `bimap` to which the set view belongs if replacing is allowed by
all other views of the `bimap`.
* [*Postconditions:] Validity of position is preserved in all cases.
* [*Returns: ] `true` if the replacement took place, `false` otherwise.
* [link list_of_complexity_signature
[*Complexity:]] O(R(n)).
* [*Exception safety:] Strong. If an exception is thrown by some user-provided
operation, the `bimap` to which the set view belongs remains in
its original state.


[#reference_list_of_replace_data_iterator_data]

    template< class CompatibleData >
    bool replace_data(iterator position, const CompatibleData & x);

* [*Requires: ] `position` is a valid dereferenceable iterator of the set view.
`CompatibleKey` can be assigned to `mapped_type`.
* [*Effects:] Assigns the value `x` to `e.second`, where `e` is the element pointed 
to by `position` into the `bimap` to which the set view belongs if replacing is allowed by
all other views of the `bimap`.
* [*Postconditions:] Validity of position is preserved in all cases.
* [*Returns: ] `true` if the replacement took place, `false` otherwise.
* [link list_of_complexity_signature
[*Complexity:]] O(R(n)).
* [*Exception safety:] Strong. If an exception is thrown by some user-provided
operation, the `bimap` to which the set view belongs remains in
its original state.


[#reference_list_of_modify_key_iterator_modifier]

    template< class KeyModifier >
    bool modify_key(iterator position, KeyModifier mod);

* [*Requires: ] `KeyModifier` is a model of __SGI_UNARY_FUNCTION__ accepting arguments of
type: `key_type&`; `position` is a valid dereferenceable iterator of the view.
* [*Effects:] Calls `mod(e.first)` where e is the element pointed to by position and 
rearranges `*position` into all the views of the `bimap`.
If the rearrangement fails, the element is erased.
It is successful if the rearrangement is allowed by all other views of the `bimap`.
* [*Postconditions:] Validity of `position` is preserved if the operation succeeds.
* [*Returns: ] `true` if the operation succeeded, `false` otherwise.
* [link list_of_complexity_signature
[*Complexity:]] O(M(n)).
* [*Exception safety:] Basic. If an exception is thrown by some user-provided
operation (except possibly mod), then the element pointed to by position is erased.
* [*Note:] Only provided for map views. 


[#reference_list_of_modify_data_iterator_modifier]

    template< class DataModifier >
    bool modify_data(iterator position, DataModifier mod);

* [*Requires: ] `DataModifier` is a model of __SGI_UNARY_FUNCTION__ accepting arguments of
type: `mapped_type&`; `position` is a valid dereferenceable iterator of the view.
* [*Effects:] Calls `mod(e.second)` where e is the element pointed to by position and 
rearranges `*position` into all the views of the `bimap`.
If the rearrangement fails, the element is erased.
It is successful if the rearrangement is allowed by all other views of the `bimap`.
* [*Postconditions:] Validity of `position` is preserved if the operation succeeds.
* [*Returns: ] `true` if the operation succeeded, `false` otherwise.
* [link list_of_complexity_signature
[*Complexity:]] O(M(n)).
* [*Exception safety:] Basic. If an exception is thrown by some user-provided
operation (except possibly mod), then the element pointed to by position is erased.
* [*Note:] Only provided for map views. 

[/
[#reference_list_of_modify_iterator_modifier]

    template< class Modifier >
    bool modify(iterator position,Modifier mod);

* [*Requires: ] `Modifier` is a model of __SGI_BINARY_FUNCTION__ accepting arguments of
type: `first_type&` and `second_type&` for ['Map View] and `left_type&` and `right_type&`
for ['Set View]. `position` is a valid dereferenceable iterator of the view.
* [*Effects:] Calls `mod(e.first,e.second)` for ['Map View] or calls `mod(e.left,e.right)`
for ['Set View] where `e` is the element pointed to by `position` and
rearranges `*position` into all the views of the `bimap`.
Rearrangement on `list_of` views does not change the position of the element
with respect to the view; rearrangement on other views may or might not succeed.
If the rearrangement fails, the element is erased.
* [*Postconditions:] Validity of `position` is preserved if the operation succeeds.
* [*Returns: ] `true` if the operation succeeded, `false` otherwise.
* [link list_of_complexity_signature 
[*Complexity:]] O(M(n)).
* [*Exception safety:] Basic. If an exception is thrown by some user-provided
operation (except possibly `mod`), then the element pointed to by position is erased.
]

[endsect]

[section List operations]

`list_of` views provide the full set of list operations found in `std::list`;
the semantics of these member functions, however, differ from that of `std::list`
in some cases as insertions might not succeed due to banning by other views.
Similarly, the complexity of the operations may depend on the other views
belonging to the same `bimap`.


[#reference_list_of_splice_iterator_this]

    void splice(iterator position, this_type & x);

* [*Requires: ] `position` is a valid iterator of the view. `&x!=this`.
* [*Effects:] Inserts the contents of `x` before position, in the same order as
they were in `x`. Those elements successfully inserted are erased from `x`.
* [link list_of_complexity_signature 
[*Complexity:]] O(`x.size()`*I(n+`x.size()`) + `x.size()`*D(`x.size()`)).
* [*Exception safety:] Basic.


[#reference_list_of_splice_iterator_this_iterator]

    void splice(iterator position, this_type & x,iterator i);

* [*Requires: ] `position` is a valid iterator of the view. `i` is a valid
dereferenceable iterator `x`.
* [*Effects:] Inserts the element pointed to by `i` before position: if insertion
is successful, the element is erased from `x`. In the special case `&x==this`,
no copy or deletion is performed, and the operation is always successful. If
`position==i`, no operation is performed.
* [*Postconditions:] If `&x==this`, no iterator or reference is invalidated.
* [link list_of_complexity_signature 
[*Complexity:]] If `&x==this`, constant; otherwise O(I(n) + D(n)).
* [*Exception safety:] If `&x==this`, nothrow; otherwise, strong.


[#reference_list_of_splice_iterator_this_iterator_iterator]

    void splice(iterator position, this_type & x, iterator first, iterator last);

* [*Requires: ] `position` is a valid iterator of the view. `first` and `last` are
valid iterators of `x`. last is reachable from `first`. position is not in the
range `[first,last)`.
* [*Effects:] For each element in the range `[first,last)`, insertion is tried
before position; if the operation is successful, the element is erased from x.
In the special case `&x==this`, no copy or deletion is performed, and insertions
are always successful.
* [*Postconditions:] If `&x==this`, no iterator or reference is invalidated.
* [link list_of_complexity_signature 
[*Complexity:]] If `&x==this`, constant; otherwise O(m*I(n+m) + m*D(x.size()))
where m is the number of elements in `[first,last)`.
* [*Exception safety:] If `&x==this`, nothrow; otherwise, basic.


[#reference_list_of_remove_value]

    void remove(const value_type & value);

* [*Effects:] Erases all elements of the view which compare equal to `value`.
* [link list_of_complexity_signature 
[*Complexity:]] O(n + m*D(n)), where m is the number of elements erased.
* [*Exception safety:] Basic.


[#reference_list_of_remove_if_predicate]

    template< class Predicate >
    void remove_if(Predicate pred);

* [*Effects:] Erases all elements `x` of the view for which `pred(x)` holds.
* [link list_of_complexity_signature 
[*Complexity:]] O(n + m*D(n)), where m is the number of elements erased.
* [*Exception safety:] Basic.


[#reference_list_of_unique]

    void unique();

* [*Effects:] Eliminates all but the first element from every consecutive
group of equal elements referred to by the iterator `i` in the range
`[first+1,last)` for which `*i==*(i-1)`.
* [link list_of_complexity_signature 
[*Complexity:]] O(n + m*D(n)), where m is the number of elements erased.
* [*Exception safety:] Basic.


[#reference_list_of_unique_predicate]

    template< class BinaryPredicate >
    void unique(BinaryPredicate binary_pred);

* [*Effects:] Eliminates all but the first element from every consecutive
group of elements referred to by the iterator i in the range \[first+1,last)
for which `binary_pred(*i,*(i-1))` holds.
* [link list_of_complexity_signature 
[*Complexity:]] O(n + m*D(n)), where m is the number of elements erased.
* [*Exception safety:] Basic.


[#reference_list_of_merge_this]

    void merge(this_type & x);

* [*Requires: ] `std::less<value_type>` is a __SGI_STRICT_WEAK_ORDERING__ over `value_type`.
Both the view and `x` are sorted according to `std::less<value_type>`.
* [*Effects:] Attempts to insert every element of `x` into the corresponding
position of the view (according to the order). Elements successfully inserted
are erased from `x`. The resulting sequence is stable, i.e. equivalent elements
of either container preserve their relative position. In the special case
`&x==this`, no operation is performed.
* [*Postconditions:] Elements in the view and remaining elements in `x` are sorted.
Validity of iterators to the view and of non-erased elements of `x` references
is preserved.
* [link list_of_complexity_signature 
[*Complexity:]] If `&x==this`, constant; otherwise
O(n + `x.size()`*I(n+`x.size()`) + `x.size()`*D(`x.size()`)).
* [*Exception safety:] If `&x==this`, nothrow; otherwise, basic.


[#reference_list_of_merge_this_compare]

    template< class Compare >
    void merge(this_type & x, Compare comp);

* [*Requires:] Compare is a __SGI_STRICT_WEAK_ORDERING__ over `value_type`. Both the view
and `x` are sorted according to `comp`.
* [*Effects:] Attempts to insert every element of `x` into the corresponding position
of the view (according to `comp`). Elements successfully inserted are erased from `x`.
The resulting sequence is stable, i.e. equivalent elements of either container preserve
their relative position. In the special case `&x==this`, no operation is performed.
* [*Postconditions:] Elements in the view and remaining elements in `x` are sorted
according to `comp`. Validity of iterators to the view and of non-erased elements
of `x` references is preserved.
* [link list_of_complexity_signature 
[*Complexity:]] If `&x==this`, constant;
otherwise O(n + `x.size()`*I(n+`x.size()`) + `x.size()`*D(`x.size()`)).
* [*Exception safety:] If `&x==this`, nothrow; otherwise, basic.


[#reference_list_of_sort]

    void sort();

* [*Requires: ] `std::less<value_type>` is a __SGI_STRICT_WEAK_ORDERING__ over value_type.
* [*Effects:] Sorts the view according to `std::less<value_type>`. The sorting is stable,
i.e. equivalent elements preserve their relative position.
* [*Postconditions:] Validity of iterators and references is preserved.
* [*Complexity:] O(n*log(n)).
* [*Exception safety:] nothrow if `std::less<value_type>` does not throw; otherwise, basic.


[#reference_list_of_sort_compare]

    template< typename Compare >
    void sort(Compare comp);

* [*Requires:] Compare is a __SGI_STRICT_WEAK_ORDERING__ over value_type.
* [*Effects:] Sorts the view according to comp. The sorting is stable, i.e. equivalent
elements preserve their relative position.
* [*Postconditions:] Validity of iterators and references is preserved.
* [*Complexity:] O(n*log(n)).
* [*Exception safety:] nothrow if comp does not throw; otherwise, basic.


[#reference_list_of_reverse]

    void reverse();

* [*Effects:] Reverses the order of the elements in the view.
* [*Postconditions:] Validity of iterators and references is preserved.
* [*Complexity:] O(n).
* [*Exception safety:] nothrow.


[endsect]

[section Rearrange operations]

These operations, without counterpart in `std::list` (although splice provides
partially overlapping functionality), perform individual and global repositioning
of elements inside the index.


[#reference_list_of_relocate_iterator_iterator]

    void relocate(iterator position, iterator i);

* [*Requires: ] `position` is a valid iterator of the view. `i` is a valid
dereferenceable iterator of the view.
* [*Effects:] Inserts the element pointed to by `i` before `position`.
If `position==i`, no operation is performed.
* [*Postconditions:] No iterator or reference is invalidated.
* [*Complexity:] Constant.
* [*Exception safety:] nothrow.


[#reference_list_of_relocate_iterator_iterator_iterator]

    void relocate(iterator position, iterator first, iterator last);

* [*Requires: ] `position` is a valid iterator of the view. `first` and `last` are
valid iterators of the view. `last` is reachable from `first`. `position` is not
in the range `[first,last)`.
* [*Effects:] The range of elements `[first,last)` is repositioned just before
`position`.
* [*Postconditions:] No iterator or reference is invalidated.
* [*Complexity:] Constant.
* [*Exception safety:] nothrow.


[endsect]

[section Serialization]

Views cannot be serialized on their own, but only as part of the
`bimap` into which they are embedded. In describing the additional
preconditions and guarantees associated to `list_of` views with respect to
serialization of their embedding containers, we use the concepts defined in the
`bimap` serialization section.

[blurb [*Operation:] saving of a `bimap` b to an output archive
(XML archive) ar.]

* [*Requires:] No additional requirements to those imposed by the container.


[blurb [*Operation:] loading of a `bimap` b' from an input archive
(XML archive) ar.]

* [*Requires:] No additional requirements to those imposed by the container.
[*Postconditions:] On successful loading, each of the elements of
`[begin(), end())`
is a restored copy of the corresponding element in
`[m.get<i>().begin(), m.get<i>().end())`,
where `i` is the position of the `list_of` view in the container.


[blurb [*Operation:] saving of an `iterator` or `const_iterator` it to an output
archive (XML archive) ar.]

* [*Requires: ] `it` is a valid iterator of the view. The associated
`bimap` has been previously saved.


[blurb [*Operation:] loading of an `iterator` or `const_iterator it`' from an input
archive (XML archive) ar.]

* [*Postconditions:] On successful loading, if it was dereferenceable then `*it`' is the
restored copy of `*it`, otherwise `it`'` == end()`.
* [*Note:] It is allowed that `it` be a `const_iterator` and the restored `it`' an iterator,
or viceversa.


[endsect]
[endsect]


[endsect]
