cling based C++ as scripting language / hot code reload

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cling based C++ as scripting language / hot code reload Why? Able to run C++ script in runtime or compile it for max speed ( as in example https://github.com/derofim/cling-cmake )

HOT code reload possible approaches:

store app state fix cling undo for files https://root-forum.cern.ch/t/loading-unloading-class-as-interpreted-macro-in-cling-multiple-times/32976/2

execute cling code to change callbacks & variables nested cling::Interpreter with multiple cling::MetaProcessor IDK how to do it, but you can create child cling::Interpreter