Scala Code Style multiple import statement

[Marza]

What is the preferred style of multiple import statements? I didn't find any documentation about this in the style guide.

The Scala cheatsheet has this example:

import scala.collection.{Vector, Sequence}

Which also seems to be the format IntelliJ prefers but scalariform enforces the following formatting:

import scala.collection.{ Vector, Sequence }

I personally prefer the first one.

[Marza]

No spacing inside curlies seems to be the rule in Twitter's scala guide at http://twitter.github.io/effectivescala/

Use braces when importing several names from a package
import com.twitter.concurrent.{Broker, Offer}

Took a look in the scala-lang source code where spaces were added inside curlies, anyone know why?

[heathermiller]

Yep, you're right that there's an ambiguity here. I don't know if there's really a best practice here, personally I abide by Twitter's standard – no spaces in imports. But I'm not sure if that's what most people would agree with.

I know that it's kind of a small detail, but might be worth bringing up on scala-debate or scala-language to get a final verdict? I'd be happy to pull in anything agreed upon :)

[Marza]

I started a topic in scala-debate https://groups.google.com/forum/#!topic/scala-debate/v9XAsYE4TfI lets see if we can bring in some opinions.

[SethTisue]

I don't think there is a consensus on this. I wouldn't be against having the style guide say both are acceptable.