better error for rename! and improved docstring #2368
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nalimilan
approved these changes
Aug 19, 2020
Co-authored-by: Milan Bouchet-Valat <[email protected]>
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Currently rename! on
SubDataFrameeither worked or failed withMethodErrorwhich was not very clear. This PR clarifies this.I opt to allow
rename!forSubDataFramewithIndex, as this is consistent with what we discuss in #2211 (i.e. to makeSubDataFramecreated with:special).