[schveiguy]

You can use arrays as if they were individual operands, and it will expand out the loop and apply the expression to all the values (and can use optimization/vector tricks if posssible).

e.g.:

arr1[] += arr2[] / 10.0 + 5;

TBH, I don't use this feature much, because I work with ranges more than arrays, which do not have this ability. This feature predates ranges (and the std.algorithm.map function, which can do what you say as well).