[Video] Achieving R's `df1[B]= df2[B]` with Julia multiple-dispatch

[xiaodai]

It was asked on Twitter

“Hey #JuliaLang, is it possibly to sunset a DataFrame using a logical/Boolean matrix like you can in #rstats? Anything close would be helpful!”

So I made a video to show how to do this in Julia

Making DF1[B] = DF2[B] work where B is a boolean array. A Julia's multiple-dispatch use-case

and the Julia version is better.

This video is suitable for people learning Julia as well as it demonstrates some aspects of multiple-dispatch.