XML (version 3.6-2)

XMLCodeFile-class: Simple classes for identifying an XML document containing R code

Description

These two classes allow the user to identify an XML document or file as containing R code (amongst other content). Objects of either of these classes can then be passed to source to read the code into R and also used in link{xmlSource} to read just parts of it. XMLCodeFile represents the file by its name; XMLCodeDoc parses the contents of the file when the R object is created. Therefore, an XMLCodeDoc is a snapshot of the contents at a moment in time while an XMLCodeFile object re-reads the file each time and so reflects any "asynchronous" changes.

Objects from the Class

One can create these objects using coercion methods, e.g as("file/name", "XMLCodeFile") or as("file/name", "XMLCodeDoc"). One can also use xmlCodeFile.

Extends

Class "character", from data part. Class "vector", by class "character", distance 2.

See Also

xmlSource