insertAt method
Insert a value before the index i.
Be careful not to call this method while iterating over the collection. @param {number} i int The index to insert before. @param {T} val The value to insert.
Implementation
void insertAt(
_i2.num i,
T val,
) {
_i4.callMethod(
this,
'insertAt',
[
i,
val,
],
);
}