C++ 的常用库

map Library

 

简单用法如下：

typedef pair value_type;

Iterators of a map container point to elements of this value_type. Thus, for an iterator called it that points to an element of a map, its key and mapped value can be accessed respectively with:

1 2 3 4

map ::iterator it;(*it).first; // the key value (of type Key)(*it).second; // the mapped value (of type T)(*it); // the "element value" (of type pair )

Naturally, any other direct access operator, such as -> or [] can be used, for example:

1 2	it->first; // same as (*it).first (the key value)it->second; // same as (*it).second (the mapped value)

 

 

举例：

 

#include   <map>

using   namespace   std;

        map <String,TEdit*>     map1;

        map1[ "Edit1 "]=Edit1;

        map1[ "Edit2 "]=Edit2;

        map1[ "Edit1 "]-> Text= "aaaaaa ";

        map1[ "Edit2 "]-> Text= "bbbbbb ";