Scala Language String Interpolation Formatted String Interpolation Using the f Interpolator
Example
val num = 42d
Print two decimal places for num using f
println(f"$num%2.2f")
42.00
Print num using scientific notation using e
println(f"$num%e")
4.200000e+01
Print num in hexadecimal with a
println(f"$num%a")
0x1.5p5
Other format strings can be found at https://docs.oracle.com/javase/6/docs/api/java/util/Formatter.html#detail
