boost/ptr_container
2
0
Fork 0
mirror of https://github.com/boostorg/ptr_container.git synced 2026-01-19 04:22:16 +00:00
Code Issues Projects Releases Wiki Activity
Files
ea15c57680927e915e93b14af2eef244baef6bce
ptr_container/doc/tutorial_example.html
Jonathan Wakely 1389c8ef65 Fix invalid XHTML markup in docs (#27) 
The reStructuredText files insert <hr> HTML elements, which are not
valid in XHTML.

The doc/tutorial_example.html file contains unquoted attributes and
unclosed <meta> and <link> tags (although since that file is included
into another document, it probably shouldn't have <html>, <head> and
<body> elements at all).
2021-11-09 09:44:27 -08:00

373 lines
30 KiB
HTML
Raw Blame History

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title> </title>
<link rel="stylesheet" href="default.css" type="text/css"/>
</head>
<body>
<pre><span class="comment">//
// Boost.Pointer Container
//
// Copyright Thorsten Ottosen 2003-2005. Use, modification and
// distribution is subject to 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)
//
// For more information, see http://www.boost.org/libs/ptr_container/
//
//
// This example is intended to get you started.
// Notice how the smart container
//
// 1. takes ownership of objects
// 2. transfers ownership
// 3. applies indirection to iterators
// 4. clones objects from other smart containers
//
//
// First we select which container to use.
//</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">ptr_container</span><span class="special">/</span><span class="identifier">ptr_deque</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
<span class="comment">//
// we need these later in the example
//</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">assert</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">exception</span><span class="special">&gt;</span>
<span class="comment">//
// Then we define a small polymorphic class
// hierarchy.
//</span>
<span class="keyword">class</span> <span class="identifier">animal</span> <span class="special">:</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">noncopyable</span>
<span class="special">{</span>
<span class="keyword">virtual</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">do_speak</span><span class="special">()</span> <span class="keyword">const</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">name_</span><span class="special">;</span>
<span class="keyword">protected</span><span class="special">:</span>
<span class="comment">//
// Animals cannot be copied...
//</span>
<span class="identifier">animal</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">animal</span><span class="special">&amp;</span> <span class="identifier">r</span> <span class="special">)</span> <span class="special">:</span> <span class="identifier">name_</span><span class="special">(</span> <span class="identifier">r</span><span class="special">.</span><span class="identifier">name_</span> <span class="special">)</span> <span class="special">{</span> <span class="special">}</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">=(</span> <span class="keyword">const</span> <span class="identifier">animal</span><span class="special">&amp;</span> <span class="special">);</span>
<span class="keyword">private</span><span class="special">:</span>
<span class="comment">//
// ...but due to advances in genetics, we can clone them!
//</span>
<span class="keyword">virtual</span> <span class="identifier">animal</span><span class="special">*</span> <span class="identifier">do_clone</span><span class="special">()</span> <span class="keyword">const</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="identifier">animal</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">name</span> <span class="special">)</span> <span class="special">:</span> <span class="identifier">name_</span><span class="special">(</span><span class="identifier">name</span><span class="special">)</span> <span class="special">{</span> <span class="special">}</span>
<span class="keyword">virtual</span> <span class="special">~</span><span class="identifier">animal</span><span class="special">()</span> <span class="keyword">throw</span><span class="special">()</span> <span class="special">{</span> <span class="special">}</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">speak</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">do_speak</span><span class="special">();</span>
<span class="special">}</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">name</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">name_</span><span class="special">;</span>
<span class="special">}</span>
<span class="identifier">animal</span><span class="special">*</span> <span class="identifier">clone</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">do_clone</span><span class="special">();</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="comment">//
// An animal is still not Clonable. We need this last hook.
//
// Notice that we pass the animal by const reference
// and return by pointer.
//</span>
<span class="identifier">animal</span><span class="special">*</span> <span class="identifier">new_clone</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">animal</span><span class="special">&amp;</span> <span class="identifier">a</span> <span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">a</span><span class="special">.</span><span class="identifier">clone</span><span class="special">();</span>
<span class="special">}</span>
<span class="comment">//
// We do not need to define 'delete_clone()' since
// since the default is to call the default 'operator delete()'.
//</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">muuuh</span> <span class="special">=</span> <span class="string">&quot;Muuuh!&quot;</span><span class="special">;</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">oiink</span> <span class="special">=</span> <span class="string">&quot;Oiiink&quot;</span><span class="special">;</span>
<span class="keyword">class</span> <span class="identifier">cow</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">animal</span>
<span class="special">{</span>
<span class="keyword">virtual</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">do_speak</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">muuuh</span><span class="special">;</span>
<span class="special">}</span>
<span class="keyword">virtual</span> <span class="identifier">animal</span><span class="special">*</span> <span class="identifier">do_clone</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="keyword">new</span> <span class="identifier">cow</span><span class="special">(</span> <span class="special">*</span><span class="keyword">this</span> <span class="special">);</span>
<span class="special">}</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="identifier">cow</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">name</span> <span class="special">)</span> <span class="special">:</span> <span class="identifier">animal</span><span class="special">(</span><span class="identifier">name</span><span class="special">)</span> <span class="special">{</span> <span class="special">}</span>
<span class="special">};</span>
<span class="keyword">class</span> <span class="identifier">pig</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">animal</span>
<span class="special">{</span>
<span class="keyword">virtual</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">do_speak</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">oiink</span><span class="special">;</span>
<span class="special">}</span>
<span class="keyword">virtual</span> <span class="identifier">animal</span><span class="special">*</span> <span class="identifier">do_clone</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="keyword">new</span> <span class="identifier">pig</span><span class="special">(</span> <span class="special">*</span><span class="keyword">this</span> <span class="special">);</span>
<span class="special">}</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="identifier">pig</span><span class="special">(</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">name</span> <span class="special">)</span> <span class="special">:</span> <span class="identifier">animal</span><span class="special">(</span><span class="identifier">name</span><span class="special">)</span> <span class="special">{</span> <span class="special">}</span>
<span class="special">};</span>
<span class="comment">//
// Then we, of course, need a place to put all
// those animals.
//</span>
<span class="keyword">class</span> <span class="identifier">farm</span>
<span class="special">{</span>
<span class="comment">//
// This is where the smart containers are handy
//</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">ptr_deque</span><span class="special">&lt;</span><span class="identifier">animal</span><span class="special">&gt;</span> <span class="identifier">barn_type</span><span class="special">;</span>
<span class="identifier">barn_type</span> <span class="identifier">barn</span><span class="special">;</span>
<span class="comment">//
// A convenience typedef for the compiler-appropriate
// smart pointer used to manage barns
//</span>
<span class="keyword">typedef</span> <span class="identifier"><a href="compatible_smart_ptr.html"><em>compatible-smart-ptr</em></a></span><span class="special">&lt;</span><span class="identifier">barn_type</span><span class="special">&gt;</span> <span class="identifier">raii_ptr</span><span class="special">;</span>
<span class="comment">//
// An error type
//</span>
<span class="keyword">struct</span> <span class="identifier">farm_trouble</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">exception</span> <span class="special">{</span> <span class="special">};</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">//
// We would like to make it possible to
// iterate over the animals in the farm
//</span>
<span class="keyword">typedef</span> <span class="identifier">barn_type</span><span class="special">::</span><span class="identifier">iterator</span> <span class="identifier">animal_iterator</span><span class="special">;</span>
<span class="comment">//
// We also need to count the farm's size...
//</span>
<span class="keyword">typedef</span> <span class="identifier">barn_type</span><span class="special">::</span><span class="identifier">size_type</span> <span class="identifier">size_type</span><span class="special">;</span>
<span class="comment">//
// And we also want to transfer an animal
// safely around. The easiest way to think
// about '::auto_type' is to imagine a simplified
// 'std::auto_ptr&lt;T&gt;' ... this means you can expect
//
// T* operator-&gt;()
// T* release()
// deleting destructor
//
// but not more.
//</span>
<span class="keyword">typedef</span> <span class="identifier">barn_type</span><span class="special">::</span><span class="identifier">auto_type</span> <span class="identifier">animal_transport</span><span class="special">;</span>
<span class="comment">//
// Create an empty farm.
//</span>
<span class="identifier">farm</span><span class="special">()</span> <span class="special">{</span> <span class="special">}</span>
<span class="comment">//
// We need a constructor that can make a new
// farm by cloning a range of animals.
//</span>
<span class="identifier">farm</span><span class="special">(</span> <span class="identifier">animal_iterator</span> <span class="identifier">begin</span><span class="special">,</span> <span class="identifier">animal_iterator</span> <span class="identifier">end</span> <span class="special">)</span>
<span class="special">:</span>
<span class="comment">//
// Objects are always cloned before insertion
// unless we explicitly add a pointer or
// use 'release()'. Therefore we actually
// clone all animals in the range
//</span>
<span class="identifier">barn</span><span class="special">(</span> <span class="identifier">begin</span><span class="special">,</span> <span class="identifier">end</span> <span class="special">)</span> <span class="special">{</span> <span class="special">}</span>
<span class="comment">//
// ... so we need some other function too
//</span>
<span class="identifier">animal_iterator</span> <span class="identifier">begin</span><span class="special">()</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">begin</span><span class="special">();</span>
<span class="special">}</span>
<span class="identifier">animal_iterator</span> <span class="identifier">end</span><span class="special">()</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">end</span><span class="special">();</span>
<span class="special">}</span>
<span class="comment">//
// Here it is quite ok to have an 'animal*' argument.
// The smart container will handle all ownership
// issues.
//</span>
<span class="keyword">void</span> <span class="identifier">buy_animal</span><span class="special">(</span> <span class="identifier">animal</span><span class="special">*</span> <span class="identifier">a</span> <span class="special">)</span>
<span class="special">{</span>
<span class="identifier">barn</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span> <span class="identifier">a</span> <span class="special">);</span>
<span class="special">}</span>
<span class="comment">//
// The farm can also be in economical trouble and
// therefore be in the need to sell animals.
//</span>
<span class="identifier">animal_transport</span> <span class="identifier">sell_animal</span><span class="special">(</span> <span class="identifier">animal_iterator</span> <span class="identifier">to_sell</span> <span class="special">)</span>
<span class="special">{</span>
<span class="keyword">if</span><span class="special">(</span> <span class="identifier">to_sell</span> <span class="special">==</span> <span class="identifier">end</span><span class="special">()</span> <span class="special">)</span>
<span class="keyword">throw</span> <span class="identifier">farm_trouble</span><span class="special">();</span>
<span class="comment">//
// Here we remove the animal from the barn,
// but the animal is not deleted yet...it's
// up to the buyer to decide what
// to do with it.
//</span>
<span class="keyword">return</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">release</span><span class="special">(</span> <span class="identifier">to_sell</span> <span class="special">);</span>
<span class="special">}</span>
<span class="comment">//
// How big a farm do we have?
//</span>
<span class="identifier">size_type</span> <span class="identifier">size</span><span class="special">()</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">size</span><span class="special">();</span>
<span class="special">}</span>
<span class="comment">//
// If things are bad, we might choose to sell all animals :-(
//</span>
<span class="identifier">raii_ptr</span> <span class="identifier">sell_farm</span><span class="special">()</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">release</span><span class="special">();</span>
<span class="special">}</span>
<span class="comment">//
// However, if things are good, we might buy somebody
// else's farm :-)
//</span>
<span class="keyword">void</span> <span class="identifier">buy_farm</span><span class="special">(</span> <span class="identifier">raii_ptr</span> <span class="identifier">other</span> <span class="special">)</span>
<span class="special">{</span>
<span class="comment">//
// This line inserts all the animals from 'other'
// and is guaranteed either to succeed or to have no
// effect
//</span>
<span class="identifier">barn</span><span class="special">.</span><span class="identifier">transfer</span><span class="special">(</span> <span class="identifier">barn</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="comment">// insert new animals at the end</span>
<span class="special">*</span><span class="identifier">other</span> <span class="special">);</span> <span class="comment">// we want to transfer all animals,
// so we use the whole container as argument
//
// You might think you would have to do
//
// other.release();
//
// but '*other' is empty and can go out of scope as it wants
//</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">other</span><span class="special">-&gt;</span><span class="identifier">empty</span><span class="special">()</span> <span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span> <span class="comment">// class 'farm'.</span>
<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
<span class="special">{</span>
<span class="comment">//
// First we make a farm
//</span>
<span class="identifier">farm</span> <span class="identifier">animal_farm</span><span class="special">;</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">0u</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">pig</span><span class="special">(</span><span class="string">&quot;Betty&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">pig</span><span class="special">(</span><span class="string">&quot;Benny&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">pig</span><span class="special">(</span><span class="string">&quot;Jeltzin&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">cow</span><span class="special">(</span><span class="string">&quot;Hanz&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">cow</span><span class="special">(</span><span class="string">&quot;Mary&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="keyword">new</span> <span class="identifier">cow</span><span class="special">(</span><span class="string">&quot;Frederik&quot;</span><span class="special">)</span> <span class="special">);</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">6u</span> <span class="special">);</span>
<span class="comment">//
// Then we make another farm...it will actually contain
// a clone of the other farm.
//</span>
<span class="identifier">farm</span> <span class="identifier">new_farm</span><span class="special">(</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">end</span><span class="special">()</span> <span class="special">);</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">6u</span> <span class="special">);</span>
<span class="comment">//
// Is it really clones in the new farm?
//</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()-&gt;</span><span class="identifier">name</span><span class="special">()</span> <span class="special">==</span> <span class="string">&quot;Betty&quot;</span> <span class="special">);</span>
<span class="comment">//
// Then we search for an animal, Mary (the Crown Princess of Denmark),
// because we would like to buy her ...
//</span>
<span class="keyword">typedef</span> <span class="identifier">farm</span><span class="special">::</span><span class="identifier">animal_iterator</span> <span class="identifier">iterator</span><span class="special">;</span>
<span class="identifier">iterator</span> <span class="identifier">to_sell</span><span class="special">;</span>
<span class="keyword">for</span><span class="special">(</span> <span class="identifier">iterator</span> <span class="identifier">i</span> <span class="special">=</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span>
<span class="identifier">end</span> <span class="special">=</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">end</span><span class="special">();</span>
<span class="identifier">i</span> <span class="special">!=</span> <span class="identifier">end</span><span class="special">;</span> <span class="special">++</span><span class="identifier">i</span> <span class="special">)</span>
<span class="special">{</span>
<span class="keyword">if</span><span class="special">(</span> <span class="identifier">i</span><span class="special">-&gt;</span><span class="identifier">name</span><span class="special">()</span> <span class="special">==</span> <span class="string">&quot;Mary&quot;</span> <span class="special">)</span>
<span class="special">{</span>
<span class="identifier">to_sell</span> <span class="special">=</span> <span class="identifier">i</span><span class="special">;</span>
<span class="keyword">break</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">}</span>
<span class="identifier">farm</span><span class="special">::</span><span class="identifier">animal_transport</span> <span class="identifier">mary</span> <span class="special">=</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">sell_animal</span><span class="special">(</span> <span class="identifier">to_sell</span> <span class="special">);</span>
<span class="keyword">if</span><span class="special">(</span> <span class="identifier">mary</span><span class="special">-&gt;</span><span class="identifier">speak</span><span class="special">()</span> <span class="special">==</span> <span class="identifier">muuuh</span> <span class="special">)</span>
<span class="comment">//
// Great, Mary is a cow, and she may live longer
//</span>
<span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">buy_animal</span><span class="special">(</span> <span class="identifier">mary</span><span class="special">.</span><span class="identifier">release</span><span class="special">()</span> <span class="special">);</span>
<span class="keyword">else</span>
<span class="comment">//
// Then the animal would be destroyed (!)
// when we go out of scope.
//</span>
<span class="special">;</span>
<span class="comment">//
// Now we can observe some changes to the two farms...
//</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">5u</span> <span class="special">);</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">7u</span> <span class="special">);</span>
<span class="comment">//
// The new farm has however underestimated how much
// it cost to feed Mary and its owner is forced to sell the farm...
//</span>
<span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">buy_farm</span><span class="special">(</span> <span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">sell_farm</span><span class="special">()</span> <span class="special">);</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">new_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">0u</span> <span class="special">);</span>
<span class="identifier">BOOST_ASSERT</span><span class="special">(</span> <span class="identifier">animal_farm</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">12u</span> <span class="special">);</span>
<span class="special">}</span>
</pre>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink