Re: How to display a number?

Use TString::Format or just plain Form(), which take arguments exactly like printf, but return a TString or a const char* respectively.

Regards,
Phil

On Monday 05 Apr 2010 11:06:12 Cedric Sodhi wrote:
> I must rephrase my question, it was a little misleading. If not only
> displaying a number in the console is necessary, which can be handled by
> "<<" but I want to display it elsewhere, say in a TText, I need to
> convert it to a char*.
>
> I thought about using stringstreams but my previous experience shows
> that CINT is not capable of using stringstreams (I send a mail regarding
> a related issue a few days ago).
>
> There are severe, random performance drops with using stringstream
> members such as clear( ). On a plain simple istringstream it takes
> almost a second to finish - it's impossible for me to determine why.
>
> Then, using a stringstream to just perform such a simple task as
> displaying a float appears to me like a overhead - given that I'll
> eventually have to convert it to a CString again.
>
> snprintf is actully just the right candidate for the job, but CINT
> doesnt appear to know it.
>
> Cedric
>
> James Jackson wrote:
> > Surly std::cout << myNumber; will do the trick?
> >
> > Or you could use a stringstream, I've used that in CINT before.
> >
> > Regards,
> > James.
> >
> > On 5 Apr 2010, at 11:56, Cedric Sodhi wrote:
> >> Simple task, one would assume. C++ offers quite a bunch of facilities to
> >> display a number as a string, such as
> >>
> >> boost::lexical_cast< string >
> >> printf
> >> sprintf
> >> snprintf
> >>
> >> Unfortunally, CINT doesn't recognize any of them (I didn't even try to
> >> use boost because that's kind of out of the question in the first
> >> place). I don't understand why among the printf functions from <cstdio>
> >> only printf is recognized...
> >>
> >> Anyway, how do you tackle this apparently impossible task which should
> >> actually be pretty common?
>
Received on Mon Apr 05 2010 - 12:58:55 CEST