Make sure that objects are initialized before they're used
这篇Item主要讲的是记得在使用之前初始化对象的成员变量,并介绍了几种初始化的方法: 1.Manuallyinitializeobjectsofbuilt-intype,becauseC++onlysometimesinitializesthemitself. 2.Inaconstructor,preferuseofthe memberinitializationlist toass