Choosing between string & string_view
We should be clear on why we choose a string_view instead of a string. Let's figure it out with the help of an example.
We'll cover the following...
Since string_view is a potential replacement for const string& when passing in functions, we might consider a case of string member initialization. Is string_view the best candidate here?
For example:
Press + to interact
class UserName {std::string mName;public:UserName(const std::string& str) : mName(str) { }};
As you can see a constructor is taking const std::string& str.
You could potentially replace a constant reference with string_view:
UserName(std::string_view sv) : mName(sv) { }
Let’s compare those alternatives implementations in three cases: ...