std string streams

[Dylan]

Is there a string stream I can write into and read from?

I've tried std::stringstream but it won't let me read from it.

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;
Is there a data structure that allows me to do both?

thanks

[Sebastian Hungerecker]

Dylan wrote:

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;

I'm no expert, but I'd say the latter doesn't work, because it calls the
<<-operator for int and not for stringstream.
Try:
ss>>iDataReadFromStream;

--
If geiger counter does not click,
the coffee, she is just not thick

[Dylan]

On Tue, 09 Aug 2005 15:34:25 +0200, Sebastian Hungerecker
<se****@web.de> wrote:

Dylan wrote:

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;

I'm no expert, but I'd say the latter doesn't work, because it calls the
<<-operator for int and not for stringstream.
Try:
ss>>iDataReadFromStream;

that doesn't work either...

[Richard Herring]

In message <lh********************************@4ax.com>, Dylan
<sp******@ontheball.com> writes

Is there a string stream I can write into and read from?

I've tried std::stringstream but it won't let me read from it.

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;

ss >> iDataReadFromStream;

Streams always go on the left.

--
Richard Herring

[Dylan]

On Tue, 9 Aug 2005 13:48:35 +0000 (UTC), Dylan
<sp******@ontheball.com> wrote:

On Tue, 09 Aug 2005 15:34:25 +0200, Sebastian Hungerecker
<se****@web.de> wrote:

Dylan wrote:

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;

I'm no expert, but I'd say the latter doesn't work, because it calls the
<<-operator for int and not for stringstream.
Try:
ss>>iDataReadFromStream;

that doesn't work either...

forgive me, it does work.

[Joe Bacigalupa]

maybe your thinking of a situation like this...

const int MaxSize = 1023;
std::stringstream convert;
char temp[MaxSize + 1] ={0};
float val;

// Say we have a control that has a "text" floating point value
GetDlgItemText(IDC_SOME_CONTROL, temp, MaxSize);

convert << temp;
convert >> val;

// if you forgot to call this afterward, you would have issues writing or
reading from the stringstream
convert.clear();
convert.str("");

"Dylan" <sp******@ontheball.com> wrote in message
news:lh********************************@4ax.com...

Is there a string stream I can write into and read from?

I've tried std::stringstream but it won't let me read from it.

ie I can do this:

int iData = 123
std::stringstream ss;
ss << 123;

but not this afterwards:

int iDataReadFromStream;
iDataReadFromStream << ss;
Is there a data structure that allows me to do both?

thanks