%%cpp -d
#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "TCanvas.h"
#include "TAxis.h"
#include "RooPlot.h"
#include "RooArgSet.h"
#include "RooArgList.h"
#include "RooCategory.h"
using namespace RooFit;

RooRealVar a("a", "a", 1, -10, 10);
RooRealVar b("b", "b", 2, -10, 10);
RooRealVar c("c", "c", 3, -10, 10);
RooRealVar d("d", "d", 4, -10, 10);
RooRealVar x("x", "x", 0, -10, 10);
c.setError(0.5);
a.setConstant();
b.setConstant();

RooCategory e("e", "e");
e.defineType("sig");
e.defineType("bkg");

RooGaussian g("g", "g", x, a, b);

RooArgSet s(a, b);

s.add(e);

s.add(RooArgSet(c, d));

s.add(g);

s.remove(d);

RooAbsArg *aptr = s.find("a");

RooArgSet *subset1 = (RooArgSet *)s.selectByName("a,b,c");

RooArgSet *subset2 = (RooArgSet *)s.selectByAttrib("Constant", true);

RooArgSet s1(a, b, c);
RooArgSet s2(c, d, e);
RooArgSet *subset3 = (RooArgSet *)s1.selectCommon(s2);

RooRealVar *ac = (RooRealVar *)a.clone("a");
RooRealVar *bc = (RooRealVar *)b.clone("b");
RooRealVar *cc = (RooRealVar *)c.clone("c");

RooArgSet s3;
s3.addOwned(RooArgSet(*ac, *bc, *cc));

s3.addClone(RooArgSet(d, e, g));

RooArgSet *sclone = (RooArgSet *)s3.Clone("sclone");

RooArgSet *sclone2 = (RooArgSet *)s3.snapshot();

RooArgSet *sclone3 = (RooArgSet *)s3.snapshot(true);

cout << "sclone = " << (*sclone) << endl;

sclone->Print();

sclone->Print("s");

sclone->Print("v");

RooArgList l(a, b, c, d);

l.add(RooArgList(a, b, c, d));

RooAbsArg *arg4 = l.at(4);