Combine child and internal child

Source: R/nest.R

Binds two parse tables together and arranges them so that the tokens are in the correct order.

combine_children(child, internal_child)

Arguments

child

A parse table or NULL.

internal_child

A parse table or NULL.

Details

Essentially, this is a wrapper around vctrs::vec_rbind()], but returns NULL if the result of vctrs::vec_rbind()] is a data frame with zero rows.