istringstream problem

[DerekBaker]

Why does this code only give Value = "Microsoft":

istringstream is(Dest);
is >Value;

where Value is a string& and Dest a char* holding "Microsoft Sans Serif"

--
Derek

[Juha Nieminen]

DerekBaker wrote:

Why does this code only give Value = "Microsoft":

istringstream is(Dest);
is >Value;

where Value is a string& and Dest a char* holding "Microsoft Sans Serif"

Because ">std::string" is defined to read the next
whitespace-delimited word into the string.

[Jim Langston]

"DerekBaker" <De***@DontBother.comwrote in message
news:fg**********@energise.enta.net...

Why does this code only give Value = "Microsoft":

istringstream is(Dest);
is >Value;

where Value is a string& and Dest a char* holding "Microsoft Sans Serif"

As stated, operator<< for stream and std::string is deliminated by
whitespace. A space, end of line, etc...
If you want the entire line use getline.
std::getline( is, Value );
which is delimited by the end of line.

[DerekBaker]

* Jim Langston:

"DerekBaker" <De***@DontBother.comwrote in message
news:fg**********@energise.enta.net...

>Why does this code only give Value = "Microsoft":

istringstream is(Dest);
is >Value;

where Value is a string& and Dest a char* holding "Microsoft Sans Serif"

As stated, operator<< for stream and std::string is deliminated by
whitespace. A space, end of line, etc...
If you want the entire line use getline.
std::getline( is, Value );
which is delimited by the end of line.

The function the code's in is templated for Value. I guess I'll have to
specialize the function for string.

--
Derek

[Jim Langston]

"DerekBaker" <De***@DontBother.comwrote in message
news:fg**********@energise.enta.net...

>* Jim Langston:

>"DerekBaker" <De***@DontBother.comwrote in message
news:fg**********@energise.enta.net...

>>Why does this code only give Value = "Microsoft":

istringstream is(Dest);
is >Value;

where Value is a string& and Dest a char* holding "Microsoft Sans Serif"

As stated, operator<< for stream and std::string is deliminated by
whitespace. A space, end of line, etc...
If you want the entire line use getline.
std::getline( is, Value );
which is delimited by the end of line.

The function the code's in is templated for Value. I guess I'll have to
specialize the function for string.

Usually an arbitrary value is delimited by whitespace anyway, with some
exceptions.

I've found that for std::string sometimes I need one word, sometimes I need
the entire line, it depends on what I am specifically doing at the moment.
As soon as you specialize for std::string to get the entire line you'll find
that you now only need to get one one word.