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ycroissant / plm

Panel Data Econometrics with R
GNU General Public License v2.0
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Fix incorrect class test #14

Closed MichaelChirico closed 2 years ago

MichaelChirico commented 2 years ago

The current test silently looks at only class(.)[[1]].

We could also use all(class(.) == .) but I think identical() is probably more appropriate here.