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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <meta name="generator" content="HTML Tidy for Linux/x86 (vers 1st October 2002), see www.w3.org"> <title>C++ Maps</title> </head> <body bgcolor="#ffffff"> <table width="100%" bgcolor="#eeeeff"> <tr> <td><a href="index.html">cppreference.com</a> -> C++ Maps</td> </tr> </table> <h3>C++ Maps</h3> <p>C++ Maps are associative containers that contain key/value pairs.</p> <table> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#pair">The pair struct</a></td> <td>a structure that stores a key/value pair</td> </tr> <tr> <td><a href="cppmap_details.html#Operators">Operators</a></td> <td>valid operators for maps</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#begin">begin()</a></td> <td>returns an iterator to the beginning of the map</td> </tr> <tr> <td><a href="cppmap_details.html#clear">clear()</a></td> <td>removes all elements</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#count">count()</a></td> <td>returns the number of times an element occurs</td> </tr> <tr> <td><a href="cppmap_details.html#empty">empty()</a></td> <td>true if the map is empty</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#end">end()</a></td> <td>returns an iterator to the end of the map</td> </tr> <tr> <td><a href="cppmap_details.html#equal_range">equal_range()</a></td> <td>returns iterators to specific items</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#erase">erase()</a></td> <td>removes an element</td> </tr> <tr> <td><a href="cppmap_details.html#find">find()</a></td> <td>finds an element</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#get_allocator">get_allocator()</a></td> <td>returns the map's allocator</td> </tr> <tr> <td><a href="cppmap_details.html#insert">insert()</a></td> <td>inserts elements</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#key_comp">key_comp()</a></td> <td>returns the function that compares elements</td> </tr> <tr> <td><a href="cppmap_details.html#lower_bound">lower_bound()</a></td> <td>returns the first element greater than or equal to a certian value</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#max_size">max_size()</a></td> <td>returns the maximum number of elements</td> </tr> <tr> <td><a href="cppmap_details.html#rbegin">rbegin()</a></td> <td>returns a reverse iterator to the end of the map</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#rend">rend()</a></td> <td>returns a reverse iterator to the beginning of the map</td> </tr> <tr> <td><a href="cppmap_details.html#size">size()</a></td> <td>returns the number of elements in the map</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#swap">swap()</a></td> <td>swap two maps</td> </tr> <tr> <td><a href="cppmap_details.html#upper_bound">upper_bound()</a></td> <td>returns the first element greater than a certian value</td> </tr> <tr bgcolor="#eeeeff"> <td><a href="cppmap_details.html#value_comp">value_comp()</a></td> <td>returns the function that compares elements</td> </tr> </table> </body></html>⌨️ 快捷键说明
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