@ or : for varargs patterns?

[samuelgruetter]

Scala 2 only accepts varargs patterns with @:

case List(1, 2, xs @ _*) =>

whereas dotty only accepts varargs patterns with : (see PR #168):

case List(1, 2, xs : _*) =>

So I wonder if this breaking change was intentional? If yes, I'll add this to the rewriting tool.

[odersky]

Hi Samuel,

Good that you spotted this! Yes, the change is intentional. It makes the
syntax more regular.

• Martin

On Fri, Nov 28, 2014 at 7:55 PM, Samuel Gruetter notifications@github.com
wrote:

Scala 2 only accepts varargs patterns with @:

case List(1, 2, xs @ _*) =>

whereas dotty only accepts varargs patterns with : (see PR #168
#168):

case List(1, 2, xs : _*) =>

So I wonder if this breaking change was intentional? If yes, I'll add this
to the rewriting tool.

—
Reply to this email directly or view it on GitHub
#253.

Martin Odersky
EPFL

[samuelgruetter]

Thanks for the confirmation. I like this change, too.