field() lets you create an arrow::Field that maps a
DataType to a column name. Fields are contained in
Schemas.
Methods
f$ToString(): convert to a stringf$Equals(other, check_metadata = FALSE): test for equality. More naturally called asf == otherf$WithMetadata(metadata): returns a newFieldwith the key-valuemetadataset. Note that all list elements inmetadatawill be coerced tocharacter.f$RemoveMetadata(): returns a newFieldwithout metadata.