Get column / variable names having all values are 0

Get column / variable names having all values are 0 from a tbl.

tbl_get_vars_zero_all(tbl)

Arguments

tbl	a tbl.

Value

a cheracter vector of column / variable names.

Examples

if (FALSE) {

 tbl <- tibble::tibble(x = letters[1:5] , y = LETTERS[1:5] , z = 0 )
 tbl
 tbl %>% tbl_get_vars_zero_all()

 tbl2 <- tibble(x = letters[1:5] , y = LETTERS[1:5] , z = 0  , xx = 0:4 , yy = 0)
 tbl2 %>% tbl_get_vars_zero_all()
}