Defines a function that allow to get/assign a global variable whose value is ensured to be reset after each access.
oneoffVariable(default = NULL)
| default | default value to which the global variable is reset after each
access. Default is |
|---|
a function with one argument (value) that provides get/set access
to a global variable.
If called with a value, it assigns this value to the global variable.
If called with no argument, it returns the current value of the global variable and
reset it to its default value -- as defined at its creation.
x <- oneoffVariable(0) # returns default value x()#> [1] 0# assign a value x(3) # get the value x()#> [1] 3# second call returns default value again x()#> [1] 0