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Views On CINT

Views On CINT. Difficult to maintain due to complexity Core part of ROOT with amazing capabilities – and people tend to ignore both facts In the middle of a major transformation: Dictionary: on demand, no call wrappers, persistency

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Views On CINT

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  1. Views On CINT Difficult to maintain due to complexity Core part of ROOT with amazing capabilities – and people tend to ignore both facts In the middle of a major transformation: • Dictionary: on demand, no call wrappers, persistency • Interpreter: Script pre-compilation and persistency, OO “byte”code for better maintenance • CINT Objects, thread safety Team Meeting

  2. Views On ROOT Few generic developments needed in “my” area: • Live help system: THtml doc to the prompt • THtml from Reflex DB, globals, friends, etc. Generic: • We should go beyond “users = HEP”. But how? Blocker is probably usability. • Development too much driven by requests • Growth is the worst improvement possible – find mechanism to integrate (external) packages without blowing up ROOT source Team Meeting

  3. GOOI – Graphical rOOt Interface We need a non-expert, intuitive, standard UI • prompt interface optional • C++ optional • optional knowledge of classes, collections,… Use reflection to visualize data format (c.f. TBrowser) Use graphical interface to design analysis, convert to C++, e.g. with Zdenek Culik’s C++ generator Parts re-usable (selections, algos, control histos) Auto-iteration (“foreach electron”) Select input data, save, load, run, view results Team Meeting

  4. GOOI – Graphical rOOt Interface ptsumf TH1FSum of pT x Input Data flow Output with x as input Tools TH1F TH2F Condition: >4 nch Condition ptsumf ForEach TH1FSum of pTfor nch>4 x Team Meeting

  5. @HasMuon IN: jet IN: muons OUT: hasMuon GOOI - Objects ForEach: Collection reference Jets Jets E() px() py() Condition: Muons pz() hadf() emf() @size() Muons Tools TH1F TH2F Condition ForEach Re-used algorithmblock with 2 inputs,one output E() TH2FJet Energy vs emffor muon-jets x emf() y Team Meeting

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