language features - Why is there no string interpolation in Scala?

Question

This is not just an idle quip... I wonder if anybody knows if there's an actual design reason why Scala does not support interpolation similar to Groovy and other "syntactically better Javas"?

e.g.

var str1 = "World";
var str2 = "Hello, ${str1}";

Answer 1

String interpolation is in Scala 2.10. See the SIP.

If you're using an earlier Scala version, there's also the ScalaEnhancedStrings compiler plugin.