stl源码剖析 详细学习笔记 hashset hashmap
//---------------------------15/03/26----------------------------
//hash_set
{
/*
hash_set概述:
1:这是一个hash版本的set,RB_tree版本的set有自动排序功能,
而hash_set没有这个功能。
2:hash_set的使用方式,与set完全相同。
*/
//class
template<class Value,
class HashFcn = hash<Value>,
class EqualKey = equal_to<Value>,
class Alloc=alloc>
class hash_set
{
private:
typedef hashtable<Value, Value, HashFcn, identity<Value>,
EqualKey, Alloc> ht;
ht rep;
public:
typedef typename ht::key_type key_type;
typedef typename ht::value_type value_type;
typedef typename ht::hasher hasher;
//hashtable中: typedef HashFcn hasher
typedef typename ht::key_equel key_equel;
typedef typename ht::size_type size_type;
typedef typename ht::difference_type difference_type;
typedef typename ht::const_pointer pointer;
typedef typename ht::const_pointer const_pointer;
typedef typename ht::const_reference reference;
typedef typename ht::const_reference const_reference;
typedef typename ht::const_iterator iterator;
typedef typename ht::const_iterator const_iterator;
hasher hash_funct()
const {return rep.hash_funct(); }
key_equel key_eq()
const { return rep.key_eq(); }
public:
//各种构造函数 ,不给定大小的话默认值为100,实际上找到的质数为193
hash_set() : rep(,hasher(), key_equel()){}
explicit hash_set(size_type n) : rep(n, hasher(), key_equel()) {}
hash_set(size_type n,
const hasher& hf) : rep(n, hf, key_equel()) {}
hash_set(size_type n,
const hasher& hf,
const key_equel& eql)
: rep(n, hf, eql) {}
template< class InputIterator>
hash_set(InputIterator f, InputIterator l)
: rep(, hasher(), key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_set(InputIterator f, InputIterator l, size_type n)
: rep(n, hasher(), key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_set(InputIterator f, InputIterator l, size_type n,
const hasher& hf)
: rep(n, hf, key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_set(InputIterator f, InputIterator l, size_type n,
const hasher& hf
const key_equel& eql)
: rep(, hf, eql) { rep.insert_unique(f, l); }
public:
size_type size()
const {return rep.size();}
size_type max_size()
const { return rep.max_size(); }
bool empty() const {return rep.empty(); }
void swap(hash_set& hs) { rep.swap(hs.rep); }
friend bool
operator== __STL_NULL_TMPL_ARGS (const hash_set&,
const hash_set&);
iterator begin()
const { return rep.begin(); }
iterator end()
const { return rep.end(); }
public:
pair<iterator,
bool> insert(const value_type& obj)
{
pair<typename ht::iterator,
bool> p =rep.insert_unique(obj);
return pair<iterator,
bool>(p.first, p.second);
}
template<class InputIterator>
void insert(InputIterator f, InputIterator l) { rep.insert_unique(f,l); }
pair<iterator,
bool> insert_noresize(const value_type& obj)
{
pair<typename ht::iterator,
bool> p = rep.insert_unique_noresize(obj);
return pair<iterator,
bool>(p.first, p.second);
}
iterator find(const key_type& key)
const { return rep.find(key); }
size_type count(const key_type& key)
const {return rep.count(key); }
//相等的key的位置(是一个左闭右开的区间),由迭代器给出
pair<iterator, iterator> equal_range(const key_type& key)
const
{
return rep.equal_range(key); }
size_type erase(const key_type& key) {
return rep.erase(key); }
void erase(iterator it) { rep.erase(it); }
void erase(iterator f, iterator l) { rep.erase(f, l); }
void clear() { rep.clear(); }
public:
void resize(size_type hint) { rep.resize(hint); }
size_type bucket_count()
const { return rep.bucket_count(); }
size_type elems_in_bucket(size_type n)
const
{
return rep.elems_in_bucket(n); }
//class
template<class Value,
class HashFcn, class EqualKey,
class Alloc>
inline bool
operator==(const hash_set<Value, HashFcn, EqualKey, Alloc>& hs1,
const hash_set<Value, HashFcn, EqualKey, Alloc>& hs2)
{
return has1.rep == has2.rep;
}
};
}
//hash_map
{
/*
hash_map概述:
hash_map之于map就像hash_set之于set一样。
*/
//class
template<class Key,
class T, class HashFcn = hash<Value>,
class EqualKey = equal_to<Value>,
class Alloc=alloc>
class hash_map
{
private:
typedef hashtable<pair<const Key, T>, Key, HashFcn,
select1st<pair<const Key, T>, EqualKey, Alloc> ht;
ht rep;
public:
typedef typename ht::key_type key_type;
typedef T data_type;
typedef T mapped_type;
typedef typename ht::value_type value_type;
typedef typename ht::hasher hasher;
//hashtable中: typedef HashFcn hasher
typedef typename ht::key_equel key_equel;
typedef typename ht::size_type size_type;
typedef typename ht::difference_type difference_type;
typedef typename ht::pointer pointer;
typedef typename ht::const_pointer const_pointer;
typedef typename ht::reference reference;
typedef typename ht::const_reference const_reference;
typedef typename ht::iterator iterator;
typedef typename ht::const_iterator const_iterator;
hasher hash_funct()
const {return rep.hash_funct(); }
key_equel key_eq()
const { return rep.key_eq(); }
public:
//各种构造函数 ,不给定大小的话默认值为100,实际上找到的质数为193
hash_map() : rep(, hasher(), key_equel()){}
explicit hash_map(size_type n) : rep(n, hasher(), key_equel()) {}
hash_map(size_type n,
const hasher& hf) : rep(n, hf, key_equel()) {}
hash_map(size_type n,
const hasher& hf,
const key_equel& eql)
: rep(n, hf, eql) {}
template< class InputIterator>
hash_map(InputIterator f, InputIterator l)
: rep(, hasher(), key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_map(InputIterator f, InputIterator l, size_type n)
: rep(n, hasher(), key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_map(InputIterator f, InputIterator l, size_type n,
const hasher& hf)
: rep(n, hf, key_equel()) { rep.insert_unique(f, l); }
template< class InputIterator>
hash_map(InputIterator f, InputIterator l, size_type n,
const hasher& hf
const key_equel& eql)
: rep(, hf, eql) { rep.insert_unique(f, l); }
public:
size_type size()
const {return rep.size();}
size_type max_size()
const { return rep.max_size(); }
bool empty() const {return rep.empty(); }
void swap(hash_map& hs) { rep.swap(hs.rep); }
friend bool
operator== __STL_NULL_TMPL_ARGS (const hash_map&,
const hash_map&);
iterator begin()
const { return rep.begin(); }
iterator end()
const { return rep.end(); }
public:
pair<iterator,
bool> insert(const value_type& obj)
{
//之前在set中就想过
为什么不直接返回 在map中看到时直接返回了,
//不是像set中一样还要先申请一个临时变量
再返回临时变量
//经过一番努力,发现:set的iterator是const_iterator,因为set不能更改值嘛
//所以需要进行转化,所以set那里会复杂一些
return rep.insert_unique(obj);
}
template<class InputIterator>
void insert(InputIterator f, InputIterator l) { rep.insert_unique(f,l); }
pair<iterator,
bool> insert_noresize(const value_type& obj)
{
return rep.insert_unique_noresize(obj);
}
iterator find(const key_type& key)
const { return rep.find(key); }
const_iterator find(const key_type& key)
const { return rep.find(key);}
T&
operator[](const key_type& key)
{
return rep.find_or_insert(value_type(key, T())).second;
}
size_type count(const key_type& key)
const {return rep.count(key); }
//相等的key的位置(是一个左闭右开的区间),由迭代器给出
pair<iterator, iterator> equal_range(const key_type& key)
const
{
return rep.equal_range(key); }
size_type erase(const key_type& key) {
return rep.erase(key); }
void erase(iterator it) { rep.erase(it); }
void erase(iterator f, iterator l) { rep.erase(f, l); }
void clear() { rep.clear(); }
public:
void resize(size_type hint) { rep.resize(hint); }
size_type bucket_count()
const { return rep.bucket_count(); }
size_type elems_in_bucket(size_type n)
const
{
return rep.elems_in_bucket(n); }
//class
template<class Value,
class HashFcn, class EqualKey,
class Alloc>
inline bool
operator==(const hash_map<Value, HashFcn, EqualKey, Alloc>& hm1,
const hash_map<Value, HashFcn, EqualKey, Alloc>& hm2)
{
return has1.rep == has2.rep;
}
};
}
//hash_multiset
{
/*
hash_multiset概述:
同上
*/
//class
template<class Value,
class HashFcn = hash<Value>,
class EqualKey = equal_to<Value>,
class Alloc=alloc>
class hash_multiset
{
private:
typedef hash_multiset<Value, Value, HashFcn, identity<Value>,
EqualKey, Alloc> ht;
ht rep;
public:
typedef typename ht::key_type key_type;
typedef typename ht::value_type value_type;
typedef typename ht::hasher hasher;
//hashtable中: typedef HashFcn hasher
typedef typename ht::key_equel key_equel;
typedef typename ht::size_type size_type;
typedef typename ht::difference_type difference_type;
typedef typename ht::const_pointer pointer;
typedef typename ht::const_pointer const_pointer;
typedef typename ht::const_reference reference;
typedef typename ht::const_reference const_reference;
typedef typename ht::const_iterator iterator;
typedef typename ht::const_iterator const_iterator;
hasher hash_funct()
const {return rep.hash_funct(); }
key_equel key_eq()
const { return rep.key_eq(); }
public:
//各种构造函数 ,不给定大小的话默认值为100,实际上找到的质数为193
hash_multiset() : rep(100,hasher(), key_equel()){}
explicit hash_multiset(size_type n) : rep(n, hasher(), key_equel()) {}
hash_multiset(size_type n,
const hasher& hf) : rep(n, hf, key_equel()) {}
hash_multiset(size_type n,
const hasher& hf,
const key_equel& eql)
: rep(n, hf, eql) {}
template< class InputIterator>
hash_multiset(InputIterator f, InputIterator l)
: rep(, hasher(), key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multiset(InputIterator f, InputIterator l, size_type n)
: rep(n, hasher(), key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multiset(InputIterator f, InputIterator l, size_type n,
const hasher& hf)
: rep(n, hf, key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multiset(InputIterator f, InputIterator l, size_type n,
const hasher& hf
const key_equel& eql)
: rep(, hf, eql) { rep.insert_equal(f, l); }
public:
size_type size()
const {return rep.size();}
size_type max_size()
const { return rep.max_size(); }
bool empty() const {return rep.empty(); }
void swap(hash_multiset& hs) { rep.swap(hs.rep); }
friend bool
operator== __STL_NULL_TMPL_ARGS (const hash_multiset&,
const hash_multiset&);
iterator begin()
const { return rep.begin(); }
iterator end()
const { return rep.end(); }
public:
iterator insert(const value_type& obj)
{
return rep.insert_equal(obj);
}
template<class InputIterator>
void insert(InputIterator f, InputIterator l) { rep.insert_equal(f,l); }
iterator insert_noresize(const value_type& obj)
{
return rep.insert_equal_noresize(obj);
}
iterator find(const key_type& key)
const { return rep.find(key); }
size_type count(const key_type& key)
const {return rep.count(key); }
//相等的key的位置(是一个左闭右开的区间),由迭代器给出
pair<iterator, iterator> equal_range(const key_type& key)
const
{
return rep.equal_range(key); }
size_type erase(const key_type& key) {
return rep.erase(key); }
void erase(iterator it) { rep.erase(it); }
void erase(iterator f, iterator l) { rep.erase(f, l); }
void clear() { rep.clear(); }
public:
void resize(size_type hint) { rep.resize(hint); }
size_type bucket_count()
const { return rep.bucket_count(); }
size_type elems_in_bucket(size_type n)
const
{
return rep.elems_in_bucket(n); }
//class
template<class Value,
class HashFcn, class EqualKey,
class Alloc>
inline bool
operator==(const hash_multiset<Value, HashFcn, EqualKey, Alloc>& hs1,
const hash_multiset<Value, HashFcn, EqualKey, Alloc>& hs2)
{
return has1.rep == has2.rep;
}
};
}
//hash_multimap
{
/*
hash_multimap概述:
同上
*/
//class
template<class Key,
class T, class HashFcn = hash<Value>,
class EqualKey = equal_to<Value>,
class Alloc=alloc>
class hash_multimap
{
private:
typedef hashtable<pair<const Key, T>, Key, HashFcn,
select1st<pair<const Key, T>, EqualKey, Alloc> ht;
ht rep;
public:
typedef typename ht::key_type key_type;
typedef T data_type;
typedef T mapped_type;
typedef typename ht::value_type value_type;
typedef typename ht::hasher hasher;
//hashtable中: typedef HashFcn hasher
typedef typename ht::key_equel key_equel;
typedef typename ht::size_type size_type;
typedef typename ht::difference_type difference_type;
typedef typename ht::pointer pointer;
typedef typename ht::const_pointer const_pointer;
typedef typename ht::reference reference;
typedef typename ht::const_reference const_reference;
typedef typename ht::iterator iterator;
typedef typename ht::const_iterator const_iterator;
hasher hash_funct()
const {return rep.hash_funct(); }
key_equel key_eq()
const { return rep.key_eq(); }
public:
//各种构造函数 ,不给定大小的话默认值为100,实际上找到的质数为193
hash_multimap() : rep(, hasher(), key_equel()){}
explicit hash_multimap(size_type n) : rep(n, hasher(), key_equel()) {}
hash_multimap(size_type n,
const hasher& hf) : rep(n, hf, key_equel()) {}
hash_multimap(size_type n,
const hasher& hf,
const key_equel& eql)
: rep(n, hf, eql) {}
template< class InputIterator>
hash_multimap(InputIterator f, InputIterator l)
: rep(, hasher(), key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multimap(InputIterator f, InputIterator l, size_type n)
: rep(n, hasher(), key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multimap(InputIterator f, InputIterator l, size_type n,
const hasher& hf)
: rep(n, hf, key_equel()) { rep.insert_equal(f, l); }
template< class InputIterator>
hash_multimap(InputIterator f, InputIterator l, size_type n,
const hasher& hf
const key_equel& eql)
: rep(, hf, eql) { rep.insert_equal(f, l); }
public:
size_type size()
const {return rep.size();}
size_type max_size()
const { return rep.max_size(); }
bool empty() const {return rep.empty(); }
void swap(hash_multimap& hs) { rep.swap(hs.rep); }
friend bool
operator== __STL_NULL_TMPL_ARGS (const hash_multimap&,
const hash_multimap&);
iterator begin()
const { return rep.begin(); }
iterator end()
const { return rep.end(); }
public:
iterator insert(const value_type& obj)
{
return rep.insert_equal(obj);
}
template<class InputIterator>
void insert(InputIterator f, InputIterator l) { rep.insert_equal(f,l); }
iterator insert_noresize(const value_type& obj)
{
return rep.insert_equal_noresize(obj);
}
iterator find(const key_type& key)
const { return rep.find(key); }
const_iterator find(const key_type& key)
const { return rep.find(key);}
size_type count(const key_type& key)
const {return rep.count(key); }
//相等的key的位置(是一个左闭右开的区间),由迭代器给出
pair<iterator, iterator> equal_range(const key_type& key)
const
{
return rep.equal_range(key); }
size_type erase(const key_type& key) {
return rep.erase(key); }
void erase(iterator it) { rep.erase(it); }
void erase(iterator f, iterator l) { rep.erase(f, l); }
void clear() { rep.clear(); }
public:
void resize(size_type hint) { rep.resize(hint); }
size_type bucket_count()
const { return rep.bucket_count(); }
size_type elems_in_bucket(size_type n)
const
{
return rep.elems_in_bucket(n); }
//class
template<class Value,
class HashFcn, class EqualKey,
class Alloc>
inline bool
operator==(const hash_multimap<Value, HashFcn, EqualKey, Alloc>& hm1,
const hash_multimap<Value, HashFcn, EqualKey, Alloc>& hm2)
{
return has1.rep == has2.rep;
}
};
}
stl源码剖析 详细学习笔记 hashset hashmap的更多相关文章
- stl源码剖析 详细学习笔记 hashtable
//---------------------------15/03/24---------------------------- //hashtable { /* 概述: sgi采用的是开链法完成h ...
- stl源码剖析 详细学习笔记 set map
// // set map.cpp // 笔记 // // Created by fam on 15/3/23. // // //---------------------------15/03 ...
- stl源码剖析 详细学习笔记 RB_tree (1)
// // RB_tree_STL.cpp // 笔记 // // Created by fam on 15/3/21. // // #include "RB_tree_STL.h&q ...
- stl源码剖析 详细学习笔记heap
// // heap.cpp // 笔记 // // Created by fam on 15/3/15. // // //---------------------------15/03/15 ...
- stl源码剖析 详细学习笔记 空间配置器
//---------------------------15/04/05---------------------------- /* 空间配置器概述: 1:new操作包含两个阶段操作 1>调 ...
- stl源码剖析 详细学习笔记 算法(1)
//---------------------------15/03/27---------------------------- //算法 { /* 质变算法:会改变操作对象之值 所有的stl算法都 ...
- stl源码剖析 详细学习笔记 算法总览
//****************************基本算法***************************** /* stl算法总览,不在stl标准规格的sgi专属算法,都以 *加以标 ...
- stl源码剖析 详细学习笔记 RB_tree (2)
//---------------------------15/03/22---------------------------- //一直好奇KeyOfValue是什么,查了下就是一个和仿函数差不多 ...
- stl源码剖析 详细学习笔记priority_queue slist
// // priority_queue.cpp // 笔记 // // Created by fam on 15/3/16. // // //------------------------- ...
随机推荐
- C#多线程的用法9-Semaphore
Semaphore:可理解为允许线程执行信号的池子,池子中放入多少个信号就允许多少线程同时执行. private static void MultiThreadSynergicWithSemaphor ...
- Sqlserver数据库中的临时表详解
临时表在Sqlserver数据库中,是非常重要的,下面就详细介绍SQL数据库中临时表的特点及其使用,仅供参考. 临时表与永久表相似,但临时表存储在tempdb中,当不再使用时会自动删除.临时表有两种类 ...
- 隐藏linux软件及内核版本
在登陆linux主机本地(非xshell或crt)前,会显示系统的版本和内核: 那么我们如何隐藏呢?如下: 1.清空版本及内核信息: [root@bqh-01 ~]# cat /etc/issue C ...
- Win8下IIS的安装和站点的公布
版权声明:本文为博主原创文章,不经博主同意注明链接就可以转载. https://blog.csdn.net/Senior_lee/article/details/32939411 之前 ...
- java通过http服务执行shell命令
服务端代码/** * 执行shell命令 * @param command 执行命令 * @return */public String exeCommandByPath( String comman ...
- screen命令使用
screen -S + name:创建一个名字叫做name的会话.在里面执行你想要执行的程序,再用Ctrl+a+d退出,让会话Detached,这样就能保证你的任务在后台一直运行,也不会随着终端的关闭 ...
- shiro实战系列(一)之入门实战
一.什么是shiro? Apache Shiro 是一个强大而灵活的开源安全框架,它干净利落地处理身份认证,授权,企业会话管理和加密. Apache Shiro 的首要目标是易于使用和理解.安全有 ...
- 【转】阿里云Ubuntu系统搭建SVN服务器
##SVN服务器相关软件安装 1.使用SSH远程服务器 (1)对于MAC OS/Liunx的用户直接打开终端输入 ssh 用户名@实例名,例如 ssh root@192.168.1.100 执行上面 ...
- day79
昨日回顾 昨日回顾: cookie: -是什么?存储在客户端浏览器上的键值对 -干啥用的?记录状态 -django中使用: -设置值: -HttpResponse对象,obj.set_cookie(k ...
- day64
Day64 Django学习篇一 1.web应用 2.C/S和B/S架构 3.python中的web框架 a:socket b:路由跟视图函数的匹配关系 c:模板渲染 django: ...