length property Null safety
override
The number of objects in this list.
The valid indices for a list are 0
through length - 1
.
Implementation
external int get length;
override
Changes the length of this list.
If newLength
is greater than
the current length, entries are initialized to null
.
Increasing the length fails if the element type does not allow null
.
Throws an UnsupportedError if the list is fixed-length or
if attempting tp enlarge the list when null
is not a valid element.
Implementation
external void set length(int length);