List columns verbs

List columns verbs

col_present(x, col)

coo_present(x, coo)

coe_present(x, coe)

coo_nb(x)

coe_nb(x)

coo_only(x)

coe_only(x)

coo_drop(x)

coe_drop(x)

coo_select(x, ...)

coe_select(x, ...)

coo_names(x)

coe_names(x)

Arguments

x

mom_tbl
col

column names to test for existence
coo, coe

column names to test for existence
...

additional parameters, just like in dplyr::select

Functions

  • col_present: test coo columns existence

  • coo_present: test coo columns existence

  • coe_present: test coe columns existence

  • coo_nb: count the number of coo columns

  • coe_nb: count the number of coe columns

  • coo_only: only retain coo columns

  • coe_only: only retain coe columns

  • coo_drop: drop coo columns

  • coe_drop: drop coe columns

  • coo_select: use select among coo columns

  • coe_select: use select among coe columns

  • coo_names: return names of coo columns

  • coe_names: return names of coe columns

Examples


bot %>% coo_nb()
#> [1] 1
bot %>% coo_names()
#> [1] "coo"
bot %>% coo_present(coo)
#> [1] TRUE
bot %>% coo_present(foo)  # non existing column
#> [1] FALSE
bot %>% coo_only()
#> # A tibble: 40 x 1
#>    coo                   
#>    <list<coo_single[,2]>>
#>  1 <tibble [138 × 2]>    
#>  2 <tibble [168 × 2]>    
#>  3 <tibble [189 × 2]>    
#>  4 <tibble [129 × 2]>    
#>  5 <tibble [152 × 2]>    
#>  6 <tibble [161 × 2]>    
#>  7 <tibble [124 × 2]>    
#>  8 <tibble [126 × 2]>    
#>  9 <tibble [183 × 2]>    
#> 10 <tibble [193 × 2]>    
#> # … with 30 more rows
#> ❯mom_tbl
bot %>% coo_drop()
#> # A tibble: 40 x 2
#>    type   fake 
#>    <fct>  <fct>
#>  1 whisky a    
#>  2 whisky a    
#>  3 whisky a    
#>  4 whisky a    
#>  5 whisky a    
#>  6 whisky a    
#>  7 whisky a    
#>  8 whisky a    
#>  9 whisky a    
#> 10 whisky a    
#> # … with 30 more rows
#> ❯mom_tbl
bot$coo2 <- bot$coo
bot %>% coo_select(coo2)
#> # A tibble: 40 x 3
#>    coo2                   type   fake 
#>    <list<coo_single[,2]>> <fct>  <fct>
#>  1 <tibble [138 × 2]>     whisky a    
#>  2 <tibble [168 × 2]>     whisky a    
#>  3 <tibble [189 × 2]>     whisky a    
#>  4 <tibble [129 × 2]>     whisky a    
#>  5 <tibble [152 × 2]>     whisky a    
#>  6 <tibble [161 × 2]>     whisky a    
#>  7 <tibble [124 × 2]>     whisky a    
#>  8 <tibble [126 × 2]>     whisky a    
#>  9 <tibble [183 × 2]>     whisky a    
#> 10 <tibble [193 × 2]>     whisky a    
#> # … with 30 more rows
#> ❯mom_tbl

hearts %>% col_present(ldk)
#> [1] TRUE

# and works the same for coe columns