Append to a list or environment, overwriting if necessary.

Append to a list or environment, overwriting if necessary.

obj1 %<<% obj2

Arguments

obj1.	The object to be appended to.
obj2.	The object to append.

Examples

not_run({
    x <- list(a = 1)
    x %<<% list(b = 2) # list(a = 1, b = 2)
    x %<<% list(a = 2) # list(a = 2)
    y <- list2env(x)
    y %<<% list(b = 2) # environment with a = 1 and b = 2
    y %<<% list2env(list(b = 2)) # same as above
    y %<<% list(a = 2) # environment with a = 2
})