Hi,
I agree with Philip. But please use TString::Format(); Form() should not
be used as it uses static buffers.
Cheers, Axel.
On 2010-04-05 12:58, Philip Rodrigues wrote:
> 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 - 13:30:00 CEST