%<>%
From magrittr v1.5
by Stefan Milton Bache
magrittr compound assignment pipe-operator
Pipe an object forward into a function or call expression and update the
lhs
object with the resulting value.
Usage
lhs %<>% rhs
Arguments
- lhs
An object which serves both as the initial value and as target.
- rhs
a function call using the magrittr semantics.
Details
The compound assignment pipe-operator, %<>%
, 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 %>%
.
See Also
Examples
library(magrittr)
# NOT RUN {
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)
}
# }
Community examples
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