The first call is executed in Main since the DataFrames module hasn't started
yet. The second loads names so that DataFrames can use those functions
internally.
This is not a pattern I'd encourage since it doesn't load names into the
caller's namespace: it always loads them into Main.
-- John
What is the scope of a module loaded within another module? I ask because
while I was examining the workings of the DataFrames module I noticed it
had duplicate calls of the Stats module.
DataFrames.jl
# Note that the two calls to using Stats in this file are
# strictly required: one pulls th
