qdap 2.2.0

Test If Environment is Global

Usage

is.global(n = 1)

Arguments

n
The number of generations to go back. If used as a function argument n should be set to 2.

Test If Environment is Global

Value

A logical response.

Description

A logical test to determine if the current environment is the global environment.

References

http://stackoverflow.com/questions/18637656/detect-if-environment-is-global-enviroment

Examples

is.global()



[1] FALSE



lapply(1:3, function(i) is.global())



[[1]]
[1] FALSE

[[2]]
[1] FALSE

[[3]]
[1] FALSE




FUN <- function() is.global(); FUN()



[1] FALSE




FUN2 <- function(x = is.global(2)) x
FUN2()



[1] FALSE



FUN3 <- function() FUN2(); FUN3()



[1] FALSE

See also

globalenv, parent.frame

Author

Simon O'Hanlon and Tyler Rinker