Re: Learning to use ranges instead of arrays

[Ivan Kazmenko via Digitalmars-d-learn]

Also, there is std.array.array for the ranges you want to convert 
to arrays.
For example, if "a" is an array, "a.map!(x => x * 2).array" 
produces an new array of doubled values (as opposed to a lazy 
range produced by std.algorithm.map).