Does std::stringstream know templates

[Rene Ivon Shamberger]

Does std::stringstream work with templates, say for instance

void someMethod(int i){
std::string s;
std::stringstream out;
out << i;
s = out.str();
....
}
could be written like this:
template< typename T>
void someMethod(const T& data){
std::string s;
std::stringstream out;
out << data; //<<-- here is the majic would-be
s = out.str();
....
}
However, it seems that std::stringstream does not know templates, or does it. Maybe I am writing the code wrong! Any body?


TIA

 

[Ian Collins]

Does std::stringstream work with templates, say for instance

void someMethod(int i){
std::string s;
std::stringstream out;
out << i;
s = out.str();
....
}
could be written like this:
template< typename T>
void someMethod(const T& data){
std::string s;
std::stringstream out;
out << data; //<<-- here is the majic would-be
s = out.str();
....
}
However, it seems that std::stringstream does not know templates, or does it. Maybe I am writing the code wrong! Any body?

Provided T has an appropriate stream operator, this will work.

 

[Nobody]

However, it seems that std::stringstream does not know templates, or
does it. Maybe I am writing the code wrong! Any body?

Anything which works in non-template code will work in a template,
provided that the template can be instantiated.

Your example will work fine for any type for which an appropriate
operator<< exists (either as method or a function). I've used a
similar template on many occasions.

If your code doesn't work for some particular case, it's probably because
no suitable operator<< can be found.

 

[Rui Maciel]

Does std::stringstream work with templates, say for instance

void someMethod(int i){
std::string s;
std::stringstream out;
out << i;
s = out.str();
....
}
could be written like this:
template< typename T>
void someMethod(const T& data){
std::string s;
std::stringstream out;
out << data; //<<-- here is the majic would-be
s = out.str();
....
}
However, it seems that std::stringstream does not know templates, or does
it. Maybe I am writing the code wrong! Any body?

The std::stringstream class works fine.

What did you expected your code would do? And can you provide an example
that reproduces the problem you've been experiencing?


Rui Maciel