这本书很早就打算看了，但是一直没有开始。我觉得这本书其实只需要有一定C++经验，越早接触越好！
1
- view c++ as a federation of languages 应该看作C、STL、Templete、面对对象四个部分
- prefer consts,enum,inline to #define
- use const whenever possible
- make sure the objects are initialized before they are used;
//这些都是初始化int x=0;const char* a="abcde";double d;cin>>d;Shit(string name,string address):name(name),address(address){}//Shit(stirng name,string address){this.name=name,this.address=address;}会先赋初值 2 Constructor,Destruction,and Assignment Operators
- know what function C++ silently write and calls
- Explicitly disallow the use of complier-generated functions you do not want
- Declare destructors virtual in polymophic base classe
- Prevent exception from leaving destructors
- Never call virtual function during construction or destruction
- Have assignment operator return a reference to *this
- Handle assignment to self in operator =
3 Resource Management
- use object to manage resources
- think carefully about copying behavior in resources manage classed
- provide access to raw resources on resource-managing classedd
- use the same form in corresponding use of new and delete
- store new objects in smart pointers in standalone statements
4 Design and Declarations
- make interfaces easy to use correctly and hard to use incorrectly
- treat class design as type design
- prefer pass-by-reference-to-const to pass-by-value
- don’t try to return a reference when you must return an object
- declare date member private
- prefer non-member non-friend functions to member functions
- declare non-member functions when type conversions should apply to all parameters
- consider support for a non-throwing swap
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