An input range. The elements must be mutable and initializable. Narrow srings are not considered as validate input parameter.
A number equal to the count of elements that are different from their initializer.
1 int[] i = [0,0,1]; 2 assert(i.mutatedCount == 1); 3 assert(i[0..$-1].mutatedCount == 0); 4 5 string[] s = ["","a"]; 6 assert(s.mutatedCount == 1); 7 8 dchar[] dc = [dchar.init, 'g']; 9 assert(dc.mutatedCount == 1); 10 11 class Foo {} 12 Foo[] f = new Foo[](8); 13 assert(f.mutatedCount == 0); 14 f[0] = new Foo; 15 f[1] = new Foo; 16 assert(f.mutatedCount == 2); 17 18 // w/char.init leads to decoding invalid UTF8 sequence 19 static assert(!is(typeof(mutatedCount!(char[])))); 20 static assert(!is(typeof(mutatedCount!(wchar[])))); 21 22 static assert(is(typeof(mutatedCount!(dchar[]))));
Indicates how many elements of a range are different from the default element value.