kfrlib
Fix cometa ambiguities
Hello,
I have been facing some issues installing KFR on a basic Ubuntu distribution. My setup is using a scientific framework (ROOT CERN) which is compiled with Clang10, and some other parts with GCC9.
I had to update many namespace to avoid ambiguities between cometa:: and std:: methods.
Here is a working update, that I compile using :
mkdir build && cd build cmake -DENABLE_TESTS=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_CXX_COMPILER=clang++ -DENABLE_CAPI_BUILD=ON ../
Can somebody have a look at that ?
I just provided an additional modification. I was using only "kfr/dft.h" header in my program and not "kfr/all.hpp", so some ambiguities were remaining.
Hello,
Do you run the code in Cling interpreter?
It adds using namespace std implicitly before user even gets chance
to include any external header.
This is against c++ namespace concept and causes all these errors.
The following (bad practice) code produces the same error:
// first merge the whole std namespace into current scope
using namespace std; // Cling does this
// then including kfr headers
#include <kfr/all.hpp>
Right that is what I am using. However, it would not be a bad thing to avoid ambiguities between namespaces I suppose.
(Side note: this 'using std' might change in the future, see https://github.com/root-project/root/pull/11027)
