Find code here : http://www.codebind.com/scala/scala-string-interpolation/
In Scala it’s common to inject variables in strings like this with the different types of string interpolation:

Scala supports basically three kinds of String Interpolation:
s String Interpolator - Prepending s to any string literal allows the usage of variables directly in the string

f String Interpolator - Prepending f to any string literal allows the creation of simple formatted strings. It is similar to C languages style printf . When using the f interpolator, all variable references should be followed by a printf style format string, like %d, %s, %f etc.

raw String Interpolator - The raw interpolator is similar to the s interpolator except that it performs “No escaping of literals within the string”

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