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# boolean operators throw relevant errors
Code
# Unknown names
select_loc(mtcars, foobar & contains("am"))
Condition
Error in `select_loc()`:
! Can't subset columns that don't exist.
x Column `foobar` doesn't exist.
Code
select_loc(mtcars, contains("am") | foobar)
Condition
Error in `select_loc()`:
! Can't subset columns that don't exist.
x Column `foobar` doesn't exist.
Code
# Empty intersection
select_loc(mtcars, cyl & am)
Condition
Error in `select_loc()`:
! Can't take the intersection of two columns.
i `cyl & am` is always an empty selection.
Code
# Symbol operands are evaluated in strict mode
foo <- 1:2
select_loc(iris, Species | foo)
Condition
Error in `select_loc()`:
! Can't subset columns that don't exist.
x Column `foo` doesn't exist.
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