Returns the first index of [element] in this list.
Returns the first index of [element] in this list.
Searches the list from index [start] to the end of the list.
The first time an object o
is encountered so that o == element
,
the index of o
is returned.
List<String> notes = ['do', 're', 'mi', 're']; notes.indexOf('re'); // 1 notes.indexOf('re', 2); // 3
Returns -1 if [element] is not found.
notes.indexOf('fa'); // -1