Concatenate characters in Scala

Question

Suppose we have a string "code". How would we concatenate any two characters? Say for example we need to concatenate last two characters,

str.init.last + str.last gives result as 201. How would we get de instead?

Answer 1

You can use string interpolation to make any combination of characters:

scala> val code = "code"
code: String = code

scala> s"${code(1)}${code(3)}"
res0: String = oe