lastIndexOf method
Returns the last index of element
in this list.
Searches the list backwards from index start
to 0
.
The first time an object o
is encountered such that o == element
,
the index of o
is returned.
final IList<String> notes = ['do', 're', 'mi', 're'].lock;
notes.lastIndexOf('re', 2); // 1
If start
is not provided, this method searches from the end of the list.
notes.lastIndexOf('re'); // 3
Returns -1
if element
is not found.
notes.lastIndexOf('fa'); // -1
Implementation
int lastIndexOf(T element, [int? start]) {
var _length = length;
start ??= _length;
if (start < 0) throw ArgumentError.value(start, "index", "Index out of range");
for (int i = min(start, _length - 1); i >= 0; i--) if (this[i] == element) return i;
return -1;
}