Test, get and set projectable_cols and their attributes

Source: R/col.R

There are various subclasses of projectable_col including the col_freq and col_binomial. These functions provide a high-level interface to those subclasses.

is_col(x)

col_shadow(x)

col_shadow(x) <- value

prj_project_col(x)

Arguments

x

An object to test or to check the attributes of

value

A value to set the attribute to