Collection operators

[Michael Schmitz]

I know collection operators have been discussed at length, but this is an unfortunate problem in a "typesafe" language.

scala> Set("foo") ++ Set("bar") + "baz"

res2: scala.collection.immutable.Set[java.lang.String] = Set(foo, bar, baz)

scala> Seq("foo") ++ Seq("bar") + "baz"

res3: java.lang.String = List(foo, bar)baz

Of course, it's even worse when you have variables and the collection type is not explicit on this line.

Peace.  Michael

[Rex Kerr]

any2stringadd strikes again!  Fortunately, you can shadow the name to remove it.

scala> implicit def any2stringadd(x: Option[Unit]) = x
any2stringadd: (x: Option[Unit])Option[Unit]

scala> Seq("foo") ++ Seq("bar") + "baz"

<console>:12: error: value + is not a member of Seq[String]

              Seq("foo") ++ Seq("bar") + "baz"

I hope someday any2stringadd it will go away, but it is a major breaking change.

  --Rex

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[Michael Schmitz]

Nice trick!

[Simon Ochsenreither]

With string interpolation shipping since 2.10, I think it would make sense to finally try and get any2stringadd deprecated for 2.12.

[Som Snytt]

Today I had occasion to quote:

"Never underestimate how long are the tendrils of any2stringadd!"

http://stackoverflow.com/a/12150383/1296806

I thought I noticed at the same time:

> @deprecated("Use String interpolation", "2.11.0") def any2stringadd(x: Any): StringAdd[Any]

On Mon, May 20, 2013 at 4:54 PM, Simon Ochsenreither <simon.och...@gmail.com> wrote:

With string interpolation shipping since 2.10, I think it would make sense to finally try and get any2stringadd deprecated for 2.12.

[Som Snytt]

Shall I add, both

> "Never underestimate how long are the tendrils of any2stringadd!"

and

> "Use String interpolation"

should have their own Scala-wear t-shirts.

Maybe it could say "Use String interpolation" on the back, and on the front something like:

"I'm with $dummy!"

[Simon Ochsenreither]

any2stringadd is now an implicit class, that's why the methods is deprecated.