问题
I use a lot of packages and I know some functions are masked because they exist in several different packages. Is there a way to get the list of duplicate functions (or masked functions?)
The ideal would be to have a list of duplicate function and for each of them, the list of packages in which it exists.
回答1:
in R base:
conflicts(detail=TRUE)
And to find the list of environments that contain a version of
getAnywhere(x = "functionA")
Note: getAnywhere also finds the functions which are not exported. and that are hence not creating conflicts.
A better (simpler) result could be obtained using:
x = "functionA"
names(which(sapply(search(), FUN = function(env) exists(x, env, inherits = FALSE, mode = "function"))))
来源：https://stackoverflow.com/questions/6354697/list-of-masked-functions-in-r