C++新特性

1.C++11新特性

• Variadic Templates

• Spaces in Template Expressions

  vector<list<int> > //ok in each C++ version
  vector<list<int>> // before c++ 11 error error: ‘>>’ should be ‘> >’ within a nested template argument list,c++11后可以正常通过
  

• nullptr and nullptr_t

• Automatic Type Deduction with auto

• Uniform Initialization

• initializer_list

• explicit for ctors taking more than one argument

• range-based for statement

  for(decl:col) {
      statement
  }
  

• =default,=delete

  如果你自行定义了一个ctor,那么编译器就不会给你一个default ctor 如果强制加上=default,就可以重新获得并使用default ctor.

• Alias(化名)Template(template typedef)

  • alias.cpp
  • template_template.cpp

• template template parameter

• type alias

• noexcept

• override

• final

• decltype

• lambda

• Rvalue reference

• move aware class

• 容器-结构与分类

  • (1) 序列式容器包括：array(C++2.0新引入),vector,deque,list,forward_list(C++2.0新引入)
  • (2) 关联式容器包括：set/multiset,map/multimap
  • (3) 无序容器(C++2.0新引入,更换原先hash_xxx为unordered_xxx)包括：unordered_map/unordered_multimap,unordered_set/unordered_multiset

• Hash Function

• tuple

  学习资料：https://www.bilibili.com/video/av51863195?from=search&seid=3610634846288253061