Re: Ambiguous overload resolution

Hi Monika,

   do this:

Long_t i = 1
hname1= hname + i;

or

hname1 = hname + (long)3

there is not operator+(TString,Int_t) as that clashes with char (automatic type promotion).

Cheers, Fons.

Monika Sharma wrote:
>
> Hi Everyone,
>
> I was happily adding an integer to a TString so far in ROOT.
> Following is a very simple example of what I used to do.
>
> ===========================================
> TString hname = "c3_02pt2_Z25_Inclusive_";
> TString hname1 = "c2_02pt2_Z25_AuAu200";
> Int_t i=1;
> hname1 = hname+i;
> ===========================================
>
> Lately I upgraded ROOT to ROOT 5.21/07 (trunk_at_26568, Dec 01 2008,
> 17:44:51 on macosx64)
> and I can't seem to be able to use this operator anymore.
> Instead I get the following error message....
>
> ====================================================================
> Error: Ambiguous overload resolution (10001,3) DeltaPtPtInclusive.C:107:
> Calling : operator+(TString,Int_t);
> Match rank: file line signature
> ffffffff /Applications/root/lib/libGraf.so -1 TImage operator+(const
> TImage&,const TImage&);
> ffffffff /Applications/root/lib/libHist.so -1 TH3D
> operator+(TH3D&,TH3D&);
> ffffffff /Applications/root/lib/libHist.so -1 TH3F
> operator+(TH3F&,TH3F&);
> =====================================================================
>
> So now instead of doing the above operation, if I do the following, it
> works fine.
>
> hname1 = hname;
> hname1 += i;
>
> However, I don't want to do this way. I still want to be able to use a
> simple operation of TString+int.
>
> Is there still a way to do it?
>
> Regards
> Monika
>
>
>

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