cast function

Change the type of an array or column

This is a wrapper around the $cast() method that many Arrow objects have. It is more convenient to call inside dplyr pipelines than the method.

cast(x, to, safe = TRUE, ...)

Arguments

• x: an Array, Table, Expression, or similar Arrow data object.
• to: DataType to cast to; for Table and RecordBatch , it should be a Schema .
• safe: logical: only allow the type conversion if no data is lost (truncation, overflow, etc.). Default is TRUE.
• ...: specific CastOptions to set

Returns

An Expression

Examples

## Not run:

mtcars %>%
  arrow_table() %>%
  mutate(cyl = cast(cyl, string()))
## End(Not run)

See Also

data-type for a list of DataType to be used with to.

Arrow C++ CastOptions documentation # nolint for the list of supported CastOptions.