On: Choosing Scala

[codygman]

Isn't this something that type inference should catch though?

[lmm → codygman]

The type of "5" + 5 is inferred to be String. If you pass it to print(), which takes a String, that's not an error, and printing "55" is presumably what you meant to happen. If you tried to pass it to a method expecting an integer, you'd get an error.