tidyselect methods for custom types

• tidyselect_data_proxy() returns a data frame.

• tidyselect_data_has_predicates() returns TRUE or FALSE

If your doesn't support predicate functions, return a 0-row data frame from tidyselect_data_proxy() and FALSE from tidyselect_data_has_predicates().

Usage

tidyselect_data_proxy(x)

tidyselect_data_has_predicates(x)

Arguments

x

A data-frame like object passed to eval_select(), eval_rename(), and friends.