change class checking to inherits() for #55

jbryer / likert

Package to analyze likert based items.

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change class checking to inherits() for #55 #56

Closed leeper closed 7 years ago

leeper commented 8 years ago

This updates the code referenced in #55 to use inherits() which should handle "tbl_df" or any other data.frame-derived object specified for the items argument.

jbryer commented 7 years ago

Thanks for the pull request @leeper