STL learning direction - Six Components

1.STL (standard template library) broadly divided into three components: containers, algorithms, iterators

		细分为六大组件：
		（1）容器 
		（2）算法
		（3）迭代器
		（4）仿函数
		（5）适配器
		（6）空间配置器

STL advantages: (1) high reusability: template class, the template function
(2) High performance: for example, can quickly find the map data from hundreds of thousands of data, using the red-black tree mechanism
(3) high portable
(4) cross-platform
---- container assembly
(1) container sequence: Vector; dequeue; List;
(2) associated containers: set / mulitiset; map / mulitimap
assembly ---- iterators (traverse)
(1) input iterator
( 2) output iterator
(3) forward iterator
(4) bidirectional iterator
random access iterators (5)