When is the Helper moved with RDataFrame::Book?

beojan · March 18, 2019, 4:13pm

When using the Book function when is the Helper moved? Specifically, will it be moved after the Initialize function is called?

couet · March 18, 2019, 4:16pm

I guess @eguiraud can help you with this question.

eguiraud · March 18, 2019, 4:30pm

Hi,
the user-provided helper is moved from when Book is invoked – it takes an rvalue reference.

Cheers,
Enrico

beojan · March 18, 2019, 4:30pm

Is that the only time it’s moved?

eguiraud · March 18, 2019, 4:32pm

I really wouldn’t know – since RDF has unique ownership of the helper, it’s allowed to move it around as much as it needs?

eguiraud · March 18, 2019, 4:43pm

P.S.
you can check with a debugger or by putting a print statement in the move-constructor of your helper.

system · April 1, 2019, 4:43pm

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