Re: scaladoc is not uptodate with latest release?

Zemian Deng wrote:

> [...] I just found out that scala.collection.mutable.Map
> has deprecated method += that's not showing on scaladoc. [...]

Hello,

the method +=(key: A): MapTo that you refer to is documented and
correctly marked as deprecated in the released scaladoc.

> [...] I like the old deprecated method better than the new suggested way.
> Is there better reason for this change other than require more typing?

I think you are simply experiencing trouble with operator precedence and
ambiguity of parentheses here.

> val m = new HashMap[String, Int]
> m += "one"->111 // warning: [...]

Try

   m += ("one" -> 111)

> m += Pair("two", 222) //the new way
> m += ("two", 222) // and this product error!

Try

   m += (("one", 111))

> What is your take on the deprecated method?

I fully agree that having a method named += which doesn't add an element
to a collection but rather returns some strange object that is capable
of performing the addition via its method called -> is a bad idea and
rather counterintuitive. The new solution to take a Tuple2 as a
parameter and to have the implicit conversion from Any to ArrowAssoc is
much more to my taste.

cu,
Thomas