field()
lets you create an arrow::Field
that maps a
DataType to a column name. Fields are contained in
Schemas.
field(name, type, metadata, nullable = TRUE)
field name
logical type, instance of DataType
currently ignored
TRUE if field is nullable
f$ToString()
: convert to a string
f$Equals(other)
: test for equality. More naturally called as f == other
field("x", int32())
#> Field
#> x: int32