Erik de Castro Lopo wrote:
Here's a question for all the C++ crack monkeys. Is it possible
to return an std::string from a function?
Something like:
std::string &
return_string ()
{
std::string s ;
// Do something with s.
return s ;
}
You need to return an actual std::string, not a reference to one (the
latter is invalid C++). The normal idiom is to mark the returned string
as a const reference in the calling function:
std::string return_string()
{
std::string s;
// Do something with s.
return s;
}
void another_function()
{
const std::string& returned_string = return_string();
}
Note that you can also use a literal C string in nearly all places where
an std::string is required, since there's an auto-converting constructor
for an std::string. i.e. You can do this:
std::string return_string()
{
return "foo";
}
--
% Andre Pang : trust.in.love.to.save <http://www.algorithm.com.au/>
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