IO tutorials

These tutorials illustrate some of the capabilities of the ROOT IO subsystem, including TTree, RNTuple, SQL and XML.

Modules
	FITS files interface tutorials
	Examples showing the FITS file interface.
	Tree tutorials
	Example code which illustrates how to use ROOT trees and ntuples.
	SQL tutorials
	Examples showing the SQL classes.
	XML tutorials
	XML examples.
	RNTuple tutorials
	Various examples featuring the ROOT 7 ntuples. See RNTuple Introduction.

Files
file	copyFiles.C
	Example of script showing how to copy all objects (including directories) from a source file.
file	dirs.C
	This macro illustrates how to create a hierarchy of directories in a Root file.
file	double32.C
	Tutorial illustrating use and precision of the Double32_t data type You should run this tutorial with ACLIC: a dictionary will be automatically created.
file	fildir.C
	This macro displays the ROOT Directory data structure
file	file.C
	This macro displays the physical ROOT file structure
file	float16.C
	Tutorial illustrating use and precision of the Float16_t data type.
file	hadd.C
	Macro to add histogram files This macro is kept for didactical purposes only: use instead the executable $ROOTSYS/bin/hadd !
file	importCode.C
	Example of script showing how to create a ROOT file with subdirectories.
file	loopdir.C
	Example script to loop over all the objects of a ROOT file directory and print in Postscript all the TH1 derived objects.
file	loopdir11.C
	Example script to loop over all the objects of a ROOT file directory and print in Postscript all the TH1 derived objects.
file	mergeSelective.C
	Merge only part of the content of a set of files.
file	readCode.C
	Example of script showing how to navigate in a ROOT file with sub-directories and read the objects in each sub-directory.
file	tcontext_context_manager.py
	This tutorial demonstrates the usage of the TContext class as a Python context manager.
file	testMergeCont.C
	Macro demonstrating the merging of containers.
file	testTMPIFile.C
	This macro shows the usage of TMPIFile to simulate event reconstruction and merging them in parallel.
file	tfile_context_manager.py
	This tutorial demonstrates the usage of the TFile class as a Python context manager.