library(pryr) 返回一条消息。 已注册的 S3 方法被 'pryr' 覆盖：来自 print.bytes Rcpp 的方法

Question

When I active a package called pryr . It returns a message

    library(pryr)

    Registered S3 method overwritten by 'pryr':
    method      from   
    print.bytes Rcpp.

I would like to know what does it is mean?
However the package runs properly. That message shows only one time each session.

Answer 1

It means that both Rcpp and pryr have an S3 method (a function) called print.bytes . That is, a print method for an object of the bytes class.

Since you now loaded pryr , the function from pryr will be used, not the one from Rcpp .

This might mean that objects of class bytes will be displayed differently after loading pryr , but since it's just a print method, this is unlikely to have serious consequences.