Passing variables declared in generics across methods

Package development
1

Consider the following S3 class:

stuff <- function(x, y) {
  this <- x[[1]]
  UseMethod("stuff")
}

stuff.foo <- function(x, y) {
  this %in% y
}

stuff.bar <- function(x, y) {
  names(this) %in% y
}

R CMD check complains that there is no visible binding for global variable ‘this’.

Is there a way to pass this across methods without making R unhappy and without declaring this in the global environment?

2

I think you can put utils::globalVariables("this") in your package, see the manual for details and CRAN packages for examples: Sign in to GitHub · GitHub

3

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