// Sum the values in a list
val sum = (0.0 /: list){ _ + _ }
// What it says: it’s an abbreviated form of
// list.leftFold(0.0) { (s,i) => s + i }
// Find the minimum value in a list
val minValue = list.reduceLeft( _ min _ )
// What it says: Note that it’s reduce, not fold. [...]
