How to TTree::ReadFile with bool?

ROOT
1

_ROOT Version:_6.29.01

Hi all,
I try to use TTree::ReadFile with Bool branch,
how can I write the data file,
I’ve try to use 0, 1. T,F
but it always return true.

#include <TTree.h>

void p1_data()
{
	TTree * t1 = new TTree("t1", "t1");
	t1->ReadFile("p1.dat");
	t1->Scan();
}

p1.dat like this

ff/O
1
1
0
0

return

cx[000]:>
Processing p1_data.cpp...
************************
*    Row   *     ff.ff *
************************
*        0 *         1 *
*        1 *         1 *
*        2 *         1 *               // should be 0
*        3 *         1 *               // should be 0
************************
cx[001]:> .q
2

Dear @cxwx1 ,

Thanks for reaching out. Could it be that you would be better served by using RDF::FromCSV in this case?

$: cat test.csv
x
true
false
true
false
false
$: root
root [0] auto df = ROOT::RDF::FromCSV("test.csv");
root [1] df.Display()->Print()
+-----+-------+
| Row | x     | 
+-----+-------+
| 0   | true  | 
+-----+-------+
| 1   | false | 
+-----+-------+
| 2   | true  | 
+-----+-------+
| 3   | false | 
+-----+-------+
| 4   | false | 
+-----+-------+
root [2] df.GetColumnType("x")
(std::string) "bool"

Cheers,
Vincenzo

3

from csv works!
but how can I define a value type if using FromCsV?
for example using float not double