Assignment pipe
Pipe an object forward into a function or call expression and update the
lhs object with the resulting value.
lhs %<>% rhs
lhs |
An object which serves both as the initial value and as target. |
rhs |
a function call using the magrittr semantics. |
The assignment pipe, %<>%, is used to
update a value by first piping it into one or more rhs expressions, and
then assigning the result. For example, some_object %<>%
foo %>% bar is equivalent to some_object <- some_object %>% foo
%>% bar. It must be the first pipe-operator in a chain, but otherwise it
works like %>%.
iris$Sepal.Length %<>% sqrt
x <- rnorm(100)
x %<>% abs %>% sort
is_weekend <- function(day)
{
# day could be e.g. character a valid representation
day %<>% as.Date
result <- day %>% format("%u") %>% as.numeric %>% is_greater_than(5)
if (result)
message(day %>% paste("is a weekend!"))
else
message(day %>% paste("is not a weekend!"))
invisible(result)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.