Better String formatting in Scala
With too many arguments, String.format easily gets too confusing. Is there a more powerful way to format a String. Like so:
"This is #{number} string".format("number" -> 1)
Or is this not possible because of type issues (format would need to take a Map[String, Any], I assume; don’t know if this would make things worse).
Or is the better way doing it like this:
val number = 1
<plain>This is { number } string</plain> text
even though it pollutes the name space?
Edit:
While a simple pimping might do in many cases, I’m also looking for something going in the same direction as Python’s format() (See: http://docs.python.org/release/3.1.2/library/string.html#formatstrings)
Answer
In Scala 2.10 you can use string interpolation.
val height = 1.9d
val name = "James"
println(f"$name%s is $height%2.2f meters tall") // James is 1.90 meters tall