initializing strings as null vs. empty string

Question

How would it matter if my C++ code (as shown below) has a string initialized as an empty string :

std::string myStr = \"\";
....some code to optionally popul         


        

Answer 1

There's a function empty() ready for you in std::string:

std::string a;
if(a.empty())
{
    //do stuff. You will enter this block if the string is declared like this
}

or

std::string a;
if(!a.empty())
{
    //You will not enter this block now
}
a = "42";
if(!a.empty())
{
    //And now you will enter this block.
}