Dear experts,
When trying to call Define on a RDataFrame
using a variadic function, i’m getting a runtime_error from here. I think the exception is raised because of this assignment.
It is very likely that something is wrong in my implementation, given that i’m using variadic functions and some c++17 features for the first time. So i’m giving some details on what i want to do:
The goal is to define a vector
of TLorentzVector
s for later use with the same parent RDataFrame
. The size of this vector is unknown at compile-time, since i’m defining it in an external (config-)file (i expect sizes from 3 to, say, 8 and could write overloaded functions for this).
My implementation is attached below. The conflicting part can be found in lines 17ff and 42.
misID_betaRDF_master.h (5.9 KB)
Sorry for not providing a standalone version. When trying to do so, ACLiC complained about:
input_line_13:14:1: warning: missing terminating '"' character [-Winvalid-pp-token]
" ignoring environment value of R_HOME
^
input_line_13:14:1: error: expected expression
input_line_13:15:83: warning: missing terminating '"' character [-Winvalid-pp-token]
/cvmfs/sft.cern.ch/lcg/releases/R/3.2.5-c6012/x86_64-slc6-gcc7-opt/lib64/R/include",
...
At the end of the day, i don’t really need a solution with variadic functions (and there are several possibilities to implement a workaround for my case), but it would be nice to understand if this is a problem with my implementation or if this corner case is not anticipated by RDataFrame
.
Cheers,
Marian
ROOT Version: HEAD (dev3/latest)
Platform: x86_64-slc6
Compiler: g++ 7.3.0