[ROOT] Strings

From: Alberto Pulvirenti (alberto.pulvirenti@ct.infn.it)
Date: Wed Oct 24 2001 - 11:14:18 MEST 

Hi everybody,
 I have one of those problems which seem so simple to solve, but I 
wasn't able to...

I must pass a TTree a selection, so I need a string with some Double_t 
values in it: e.g:
"phi <= 3.332", where I know the part "phi = ", but I must calculate the 
value 3.332 and then put it in the string.
Using the TString::Append() method I wasn't able to obtain this result.
Maybe I miss some knowledge which could be necessary for this?

Thanks,
Alberto

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