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| void  | ROOT::Internal::RDF::CheckReaderTypeMatches (const std::type_info &colType, const std::type_info &requestedType, const std::string &colName) | 
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| std::string  | ROOT::Internal::RDF::ColumnName2ColumnTypeName (const std::string &colName, TTree *tree, RDataSource *ds, RDefineBase *define, bool vector2rvec) | 
|   | Return a string containing the type of the given branch.  
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| std::string  | ROOT::Internal::RDF::ComposeRVecTypeName (const std::string &valueType) | 
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| std::string  | ROOT::Internal::RDF::GetBranchOrLeafTypeName (TTree &t, const std::string &colName) | 
|   | Return the typename of object colName stored in t, if any.  
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| unsigned int  | ROOT::Internal::RDF::GetColumnWidth (const std::vector< std::string > &names, const unsigned int minColumnSpace=8u) | 
|   | Get optimal column width for printing a table given the names and the desired minimal space between columns.  
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| std::string  | ROOT::Internal::RDF::GetLeafTypeName (TLeaf *leaf, const std::string &colName) | 
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| unsigned int  | ROOT::Internal::RDF::GetNSlots () | 
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| Long64_t  | ROOT::Internal::RDF::InterpreterCalc (const std::string &code, const std::string &context="") | 
|   | Jit code in the interpreter with TInterpreter::Calc, throw in case of errors.  
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| void  | ROOT::Internal::RDF::InterpreterDeclare (const std::string &code) | 
|   | Declare code in the interpreter via the TInterpreter::Declare method, throw in case of errors.  
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| bool  | ROOT::Internal::RDF::IsInternalColumn (std::string_view colName) | 
|   | Whether custom column with name colName is an "internal" column such as rdfentry_ or rdfslot_.  
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| bool  | ROOT::Internal::RDF::IsStrInVec (const std::string &str, const std::vector< std::string > &vec) | 
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| std::vector< std::string >  | ROOT::Internal::RDF::ReplaceDotWithUnderscore (const std::vector< std::string > &columnNames) | 
|   | Replace occurrences of '.  
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| std::string  | ROOT::Internal::RDF::TypeID2TypeName (const std::type_info &id) | 
|   | Returns the name of a type starting from its type_info An empty string is returned in case of failure References and pointers are not supported since those cannot be stored in columns.  
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| char  | ROOT::Internal::RDF::TypeName2ROOTTypeName (const std::string &b) | 
|   | Convert type name (e.g.  
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| const std::type_info &  | ROOT::Internal::RDF::TypeName2TypeID (const std::string &name) | 
|   | Return the type_info associated to a name.  
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