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		<title>C++/Map Multimap/map insert - История изменений</title>
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		<updated>2026-04-10T06:41:24Z</updated>
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		<id>http://cppe.ru/index.php?title=C%2B%2B/Map_Multimap/map_insert&amp;diff=1456&amp;oldid=prev</id>
		<title> в 14:21, 25 мая 2010</title>
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				<updated>2010-05-25T14:21:06Z</updated>
		
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 14:21, 25 мая 2010&lt;/td&gt;
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		<id>http://cppe.ru/index.php?title=C%2B%2B/Map_Multimap/map_insert&amp;diff=1457&amp;oldid=prev</id>
		<title>Admin: 1 версия:&amp;#32;Импорт контента...</title>
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				<updated>2010-05-25T10:25:52Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия: Импорт контента...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Insert value pair to map==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt;  &lt;br /&gt;
 &lt;br /&gt;
#include &amp;lt;iostream&amp;gt;&lt;br /&gt;
using std::cout;&lt;br /&gt;
using std::endl;&lt;br /&gt;
#include &amp;lt;map&amp;gt; // map class-template definition&lt;br /&gt;
int main()&lt;br /&gt;
{&lt;br /&gt;
   std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt; pairs;&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 15, 2.7 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 30, 111.11 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 0, 1010.1 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 10, 22.22 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 25, 33.333 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 0, 77.54 ) ); // dup ignored&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 20, 9.345 ) );&lt;br /&gt;
   pairs.insert( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::value_type( 15, 99.3 ) ); // dup ignored&lt;br /&gt;
   cout &amp;lt;&amp;lt; &amp;quot;pairs contains:\nKey\tValue\n&amp;quot;;&lt;br /&gt;
   // use const_iterator to walk through elements of pairs&lt;br /&gt;
   for ( std::map&amp;lt; int, double, std::less&amp;lt; int &amp;gt; &amp;gt;::const_iterator iter = pairs.begin();&lt;br /&gt;
      iter != pairs.end(); ++iter )&lt;br /&gt;
      cout &amp;lt;&amp;lt; iter-&amp;gt;first &amp;lt;&amp;lt; &amp;quot;\t&amp;quot; &amp;lt;&amp;lt; iter-&amp;gt;second &amp;lt;&amp;lt; &amp;quot;\n&amp;quot;;&lt;br /&gt;
   cout &amp;lt;&amp;lt; endl;&lt;br /&gt;
   return 0;&lt;br /&gt;
}&lt;br /&gt;
/* &lt;br /&gt;
pairs contains:&lt;br /&gt;
Key     Value&lt;br /&gt;
0       1010.1&lt;br /&gt;
10      22.22&lt;br /&gt;
15      2.7&lt;br /&gt;
20      9.345&lt;br /&gt;
25      33.333&lt;br /&gt;
30      111.11&lt;br /&gt;
&lt;br /&gt;
 */        &lt;br /&gt;
    &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==map insert==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt;  &lt;br /&gt;
#include &amp;lt;map&amp;gt;&lt;br /&gt;
#include &amp;lt;iostream&amp;gt;&lt;br /&gt;
using namespace std;&lt;br /&gt;
class Data&lt;br /&gt;
{&lt;br /&gt;
public:&lt;br /&gt;
  Data(int val = 0) { mVal = val; }&lt;br /&gt;
  int getVal() const { return mVal; }&lt;br /&gt;
  void setVal(int val) {mVal = val; }&lt;br /&gt;
protected:&lt;br /&gt;
  int mVal;&lt;br /&gt;
};&lt;br /&gt;
int main(int argc, char** argv)&lt;br /&gt;
{&lt;br /&gt;
  map&amp;lt;int, Data&amp;gt; dataMap;&lt;br /&gt;
  pair&amp;lt;map&amp;lt;int, Data&amp;gt;::iterator, bool&amp;gt; ret;&lt;br /&gt;
  ret = dataMap.insert(make_pair(1, Data(4)));&lt;br /&gt;
  if (ret.second) {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;Insert succeeded!\n&amp;quot;;&lt;br /&gt;
  } else {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;Insert failed!\n&amp;quot;;&lt;br /&gt;
  }&lt;br /&gt;
  &lt;br /&gt;
  ret = dataMap.insert(make_pair(1, Data(6)));&lt;br /&gt;
  if (ret.second) {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;Insert succeeded!\n&amp;quot;;&lt;br /&gt;
  } else {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;Insert failed!\n&amp;quot;;&lt;br /&gt;
  }&lt;br /&gt;
  return (0);&lt;br /&gt;
}&lt;br /&gt;
  &lt;br /&gt;
    &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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