A vector

For vec_chop(), a list of positive integer vectors to slice x with, or NULL. If NULL, x is split into its individual elements, equivalent to using an indices of as.list(vec_seq_along(x)).

For list_unchop(), a list of positive integer vectors specifying the locations to place elements of x in. Each element of x is recycled to the size of the corresponding index vector. The size of indices must match the size of x. If NULL, x is combined in the order it is provided in, which is equivalent to using vec_c().

If NULL, the default, the output type is determined by computing the common type across all elements of x. Alternatively, you can supply ptype to give the output a known type.

A name specification for combining inner and outer names. This is relevant for inputs passed with a name, when these inputs are themselves named, like outer = c(inner = 1), or when they have length greater than 1: outer = 1:2. By default, these cases trigger an error. You can resolve the error by providing a specification that describes how to combine the names or the indices of the inner vector with the name of the input. This specification can be:

• A function of two arguments. The outer name is passed as a string to the first argument, and the inner names or positions are passed as second argument.

• An anonymous function as a purrr-style formula.

• A glue specification of the form "{outer}_{inner}".

• An rlang::zap() object, in which case both outer and inner names are ignored and the result is unnamed.

See the name specification topic.

How to repair names, see repair options in vec_as_names().