.import(file, ...) .export(file, x, ...).import, an R data.frame. For .export, file, invisibly..import and .export. It is possible to write new methods like with any S3 generic (e.g., print).As an example, .import.rio_csv imports from a comma-separated values file. If you want to produce a method for a new filetype with extension “myfile”, you simply have to create a function called .import.rio_myfile that implements a format-specific importing routine and returns a data.frame. rio will automatically recognize new S3 methods, so that you can then import your file using: import("file.myfile").
As general guidance, if an import method creates many attributes, these attributes should be stored --- to the extent possible --- in variable-level attributes fields. These can be “gathered” to the data.frame level by the user via gather_attrs.
import, export