Regarding std.range.indexed

[bearophile]

Code like this doesn't compile, the swap doesn't work:

import std.range: indexed;
import std.algorithm: swap;
void main() {
    immutable source = [10, 20, 30];
    auto ind = indexed(source, [0, 1, 2]);
    swap(ind[0], ind[1]);
}


But isn't an important usage case of indexed() to shuffle and 
sort a view of an immutable array, like sorting a 
immutable(int)*[] ?

Bye,
bearophile