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| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_bimap.the_tutorial.differences_with_standard_maps"></a><a class="link" href="differences_with_standard_maps.html" title="Differences with standard maps">Differences |
| with standard maps</a> |
| </h3></div></div></div> |
| <div class="toc"><dl> |
| <dt><span class="section"><a href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.insertion">Insertion</a></span></dt> |
| <dt><span class="section"><a href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.iterator__value_type">iterator::value_type</a></span></dt> |
| <dt><span class="section"><a href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.operator_____and_at__">operator[] |
| and at()</a></span></dt> |
| <dt><span class="section"><a href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.complexity_of_operations">Complexity |
| of operations</a></span></dt> |
| </dl></div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_bimap.the_tutorial.differences_with_standard_maps.insertion"></a><a class="link" href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.insertion" title="Insertion">Insertion</a> |
| </h4></div></div></div> |
| <p> |
| Remember that a map can be interpreted as a relation between two collections. |
| In bimaps we have the freedom to change both collection types, imposing |
| constrains in each of them. Some insertions that we give for granted to |
| success in standard maps fails with bimaps. For example: |
| </p> |
| <pre class="programlisting"><span class="identifier">bimap</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">bm</span><span class="special">;</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="string">"orange"</span><span class="special">);</span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="string">"orange"</span><span class="special">);</span> <span class="comment">// No effect! returns make_pair(iter,false) |
| </span></pre> |
| <p> |
| The insertion will only succeed if it is allowed by all views of the <code class="computeroutput"><span class="identifier">bimap</span></code>. In the next snippet we define |
| the right collection as a multiset, when we try to insert the same two |
| elements the second insertion is allowed by the left map view because both |
| values are different and it is allowed by the right map view because it |
| is a non-unique collection type. |
| </p> |
| <pre class="programlisting"><span class="identifier">bimap</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">multiset_of</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="special">></span> <span class="identifier">bm</span><span class="special">;</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="string">"orange"</span><span class="special">);</span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="string">"orange"</span><span class="special">);</span> <span class="comment">// Insertion succeed! |
| </span></pre> |
| <p> |
| If we use a custom collection of relation type, the insertion has to be |
| allowed by it too. |
| </p> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_bimap.the_tutorial.differences_with_standard_maps.iterator__value_type"></a><a class="link" href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.iterator__value_type" title="iterator::value_type">iterator::value_type</a> |
| </h4></div></div></div> |
| <p> |
| The relations stored in the Bimap will not be in most cases modifiable |
| directly by iterators because both sides are used as keys of <span class="emphasis"><em>key-based</em></span> |
| sets. When a <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> left view iterator is dereferenced |
| the return type is <span class="emphasis"><em>signature-compatible</em></span> with a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span> <span class="keyword">const</span> <span class="identifier">A</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">B</span> <span class="special">></span></code>. |
| However there are some collection types that are not <span class="emphasis"><em>key_based</em></span>, |
| for example list_of. If a Bimap uses one of these collection types there |
| is no problem with modifying the data of that side. The following code |
| is valid: |
| </p> |
| <pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">bimap</span><span class="special"><</span> <span class="keyword">int</span><span class="special">,</span> <span class="identifier">list_of</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">></span> <span class="special">></span> <span class="identifier">bm_type</span><span class="special">;</span> |
| <span class="identifier">bm_type</span> <span class="identifier">bm</span><span class="special">;</span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span> <span class="identifier">bm_type</span><span class="special">::</span><span class="identifier">relation</span><span class="special">(</span> <span class="number">1</span><span class="special">,</span> <span class="string">"one"</span> <span class="special">)</span> <span class="special">);</span> |
| <span class="special">...</span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">find</span><span class="special">(</span><span class="number">1</span><span class="special">)-></span><span class="identifier">second</span> <span class="special">=</span> <span class="string">"1"</span><span class="special">;</span> <span class="comment">// Valid |
| </span></pre> |
| <p> |
| In this case, when the iterator is dereferenced the return type is <span class="emphasis"><em>signature-compatible</em></span> |
| with a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> <span class="keyword">int</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span></code>. |
| </p> |
| <p> |
| The following table shows the constness of the dereferenced data of each |
| collection type of: |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Side collection type |
| </p> |
| </th> |
| <th> |
| <p> |
| Dereferenced data |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">set_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>constant</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">multiset_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>constant</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">unordered_set_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>constant</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">unordered_multiset_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>constant</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">list_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>mutable</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">vector_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>mutable</em></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">unconstrained_set_of</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="emphasis"><em>mutable</em></span> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p> |
| Here are some examples. When dereferenced the iterators returns a type |
| that is <span class="emphasis"><em>signature-compatible</em></span> with these types. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Bimap type |
| </p> |
| </th> |
| <th> |
| <p> |
| Signature-compatible types |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">iterator</span> </code> <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">relation</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">left_iterator</span> </code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">right_iterator</span></code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">B</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">A</span><span class="special">></span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">multiset_of</span><span class="special"><</span><span class="identifier">A</span><span class="special">>,</span><span class="identifier">unordered_set_of</span><span class="special"><</span><span class="identifier">B</span><span class="special">></span> |
| <span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">iterator</span> </code> <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">relation</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">left_iterator</span> </code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">right_iterator</span></code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">B</span><span class="special">,</span><span class="keyword">const</span> <span class="identifier">A</span><span class="special">></span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">set_of</span><span class="special"><</span><span class="identifier">A</span><span class="special">>,</span><span class="identifier">list_of</span><span class="special"><</span><span class="identifier">B</span><span class="special">></span> |
| <span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">iterator</span> </code> <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">relation</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">left_iterator</span> </code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">right_iterator</span></code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="identifier">B</span><span class="special">,</span><span class="keyword">const</span> |
| <span class="identifier">A</span><span class="special">></span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">vector_of</span><span class="special"><</span><span class="identifier">A</span><span class="special">>,</span><span class="identifier">set_of</span><span class="special"><</span><span class="identifier">B</span><span class="special">></span> |
| <span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">iterator</span> </code> <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">relation</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> |
| <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">left_iterator</span> </code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="keyword">const</span> |
| <span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">right_iterator</span></code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="keyword">const</span> |
| <span class="identifier">B</span><span class="special">,</span><span class="identifier">A</span><span class="special">></span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">bimap</span><span class="special"><</span><span class="identifier">list_of</span><span class="special"><</span><span class="identifier">A</span><span class="special">>,</span><span class="identifier">unconstrained_set_of</span><span class="special"><</span><span class="identifier">B</span><span class="special">></span> |
| <span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">iterator</span> </code> <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">relation</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">left_iterator</span> </code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span><span class="identifier">B</span><span class="special">></span></code> |
| </p> |
| <p> |
| <code class="computeroutput"><span class="identifier">right_iterator</span></code> |
| <span class="bold"><strong>-></strong></span> <code class="computeroutput"><span class="identifier">pair</span><span class="special"><</span><span class="identifier">B</span><span class="special">,</span><span class="identifier">A</span><span class="special">></span></code> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_bimap.the_tutorial.differences_with_standard_maps.operator_____and_at__"></a><a class="link" href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.operator_____and_at__" title="operator[] and at()">operator[] |
| and at()</a> |
| </h4></div></div></div> |
| <p> |
| <code class="computeroutput"><span class="identifier">set_of</span></code> and <code class="computeroutput"><span class="identifier">unordered_set_of</span></code> map views overload |
| <code class="computeroutput"><span class="keyword">operator</span><span class="special">[]</span></code> |
| to retrieve the associated data of a given key only when the other collection |
| type is a mutable one. In these cases it works in the same way as the standard. |
| </p> |
| <pre class="programlisting"><span class="identifier">bimap</span><span class="special"><</span> <span class="identifier">unorderd_set_of</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">>,</span> <span class="identifier">list_of</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">bm</span><span class="special">;</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">[</span><span class="string">"one"</span><span class="special">]</span> <span class="special">=</span> <span class="number">1</span><span class="special">;</span> <span class="comment">// Ok |
| </span></pre> |
| <p> |
| The standard defines an access function for <code class="computeroutput"><span class="identifier">map</span></code> |
| and <code class="computeroutput"><span class="identifier">unordered_map</span></code>: |
| </p> |
| <pre class="programlisting"><span class="keyword">const</span> <span class="identifier">data_type</span> <span class="special">&</span> <span class="identifier">at</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&</span> <span class="identifier">k</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="identifier">data_type</span> <span class="special">&</span> <span class="identifier">at</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&</span> <span class="identifier">k</span><span class="special">);</span> |
| </pre> |
| <p> |
| These functions look for a key and returns the associated data value, but |
| throws a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">out_of_range</span></code> exception if the key is |
| not found. |
| </p> |
| <p> |
| In bimaps the constant version of these functions is given for <code class="computeroutput"><span class="identifier">set_of</span></code> and <code class="computeroutput"><span class="identifier">unorderd_set_of</span></code> |
| map views independently of the other collection type. The mutable version |
| is only provided when the other collection type is mutable. |
| </p> |
| <p> |
| The following examples shows the behaviour of <code class="computeroutput"><span class="identifier">at</span><span class="special">(</span><span class="identifier">key</span><span class="special">)</span></code> |
| </p> |
| <p> |
| <a href="../../../../example/at_function_examples.cpp" target="_top">Go to source code</a> |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">bimap</span><span class="special"><</span> <span class="identifier">set_of</span><span class="special"><</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">>,</span> <span class="identifier">list_of</span><span class="special"><</span> <span class="keyword">int</span> <span class="special">></span> <span class="special">></span> <span class="identifier">bm_type</span><span class="special">;</span> |
| <span class="identifier">bm_type</span> <span class="identifier">bm</span><span class="special">;</span> |
| |
| <span class="keyword">try</span> |
| <span class="special">{</span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">at</span><span class="special">(</span><span class="string">"one"</span><span class="special">)</span> <span class="special">=</span> <span class="number">1</span><span class="special">;</span> <span class="comment">// throws std::out_of_range |
| </span><span class="special">}</span> |
| <span class="keyword">catch</span><span class="special">(</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">out_of_range</span> <span class="special">&</span> <span class="identifier">e</span> <span class="special">)</span> <span class="special">{}</span> |
| |
| <span class="identifier">assert</span><span class="special">(</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">empty</span><span class="special">()</span> <span class="special">);</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">[</span><span class="string">"one"</span><span class="special">]</span> <span class="special">=</span> <span class="number">1</span><span class="special">;</span> <span class="comment">// Ok |
| </span> |
| <span class="identifier">assert</span><span class="special">(</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">.</span><span class="identifier">at</span><span class="special">(</span><span class="string">"one"</span><span class="special">)</span> <span class="special">==</span> <span class="number">1</span> <span class="special">);</span> <span class="comment">// Ok |
| </span></pre> |
| <p> |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">bimap</span><span class="special"><</span> <span class="identifier">multiset_of</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">>,</span> <span class="identifier">unordered_set_of</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">bm_type</span><span class="special">;</span> |
| <span class="identifier">bm_type</span> <span class="identifier">bm</span><span class="special">;</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">right</span><span class="special">[</span><span class="number">1</span><span class="special">]</span> <span class="special">=</span> <span class="string">"one"</span><span class="special">;</span> <span class="comment">// compilation error |
| </span> |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">right</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span> <span class="identifier">bm_type</span><span class="special">::</span><span class="identifier">right_value_type</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="string">"one"</span><span class="special">)</span> <span class="special">);</span> |
| |
| <span class="identifier">assert</span><span class="special">(</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">right</span><span class="special">.</span><span class="identifier">at</span><span class="special">(</span><span class="number">1</span><span class="special">)</span> <span class="special">==</span> <span class="string">"one"</span> <span class="special">);</span> <span class="comment">// Ok |
| </span> |
| <span class="keyword">try</span> |
| <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">right</span><span class="special">.</span><span class="identifier">at</span><span class="special">(</span><span class="number">2</span><span class="special">);</span> <span class="comment">// throws std::out_of_range |
| </span><span class="special">}</span> |
| <span class="keyword">catch</span><span class="special">(</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">out_of_range</span> <span class="special">&</span> <span class="identifier">e</span> <span class="special">)</span> <span class="special">{}</span> |
| |
| <span class="identifier">bm</span><span class="special">.</span><span class="identifier">right</span><span class="special">.</span><span class="identifier">at</span><span class="special">(</span><span class="number">1</span><span class="special">)</span> <span class="special">=</span> <span class="string">"1"</span><span class="special">;</span> <span class="comment">// compilation error |
| </span> |
| </pre> |
| <p> |
| </p> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_bimap.the_tutorial.differences_with_standard_maps.complexity_of_operations"></a><a class="link" href="differences_with_standard_maps.html#boost_bimap.the_tutorial.differences_with_standard_maps.complexity_of_operations" title="Complexity of operations">Complexity |
| of operations</a> |
| </h4></div></div></div> |
| <p> |
| The complexity of some operations is different in bimaps. Read <a class="link" href="../reference/bimap_reference.html#complexity_signature_explanation">the |
| reference</a> to find the complexity of each function. |
| </p> |
| </div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2006 -2007 Matias Capeletto<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
| </div></td> |
| </tr></table> |
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