Check if an object is a tplyr_layer
Examples
is_tplyr_layer(group_count("SEX"))
#> [1] TRUE
is_tplyr_layer(group_desc("AGE"))
#> [1] TRUE
is_tplyr_layer("SEX")
#> [1] FALSE
Check if an object is a tplyr_layer
is_tplyr_layer(group_count("SEX"))
#> [1] TRUE
is_tplyr_layer(group_desc("AGE"))
#> [1] TRUE
is_tplyr_layer("SEX")
#> [1] FALSE