请告诉我这些例子中使用的单个分号是什么。 [英] Please tell me what the single semicolon is used for in these examples.
问题描述
请告诉我这两个例子中单个分号的用途。
例1:
Please tell me what the single Semicolon is used for in these 2 examples.
Example 1:
Super(const std::string& str) : mStr(str) {}
示例2:
Example 2:
Sub(int i) : Super(""), mInt(i) {}
class Super {
public:
Super(const std::string& str) : mStr(str) {}
private: std::string mStr; };
Class Sub : public Super {
public:
using Super::Super;
Sub(int i) : Super(""), mInt(i) {}
private int mInt; };
我的尝试:
请告诉我这两个例子中单个分号的用途。
示例1:Super(const std :: string& str):mStr(str){}
示例2:Sub(int i):超级(),mInt(i){}
< br $>
class Super {
public:
Super(const std :: string& str):mStr(str){}
private:std :: string mStr; };
Class Sub:public Super {
public:
使用Super :: Super;
Sub(int i):超级(),mInt(i){}
private int mInt; };
What I have tried:
Please tell me what the single Semicolon is used for in these 2 examples.
Example 1: Super(const std::string& str) : mStr(str) {}
Example 2: Sub(int i) : Super(""), mInt(i) {}
class Super {
public:
Super(const std::string& str) : mStr(str) {}
private: std::string mStr; };
Class Sub : public Super {
public:
using Super::Super;
Sub(int i) : Super(""), mInt(i) {}
private int mInt; };
推荐答案
您没有阅读文档(构造函数和成员初始化列表 - cppreference.com [ ^ ])你呢?
You didn't read the documentation (Constructors and member initializer lists - cppreference.com[^]) did you?
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