copyInto method
Returns the target vector with all elements of this vector copied into it.
Implementation
Vector<T> copyInto(Vector<T> target) {
assert(
count == target.count,
'Count of this vector ($count) and the target vector '
'(${target.count}) must match.');
if (this != target) {
for (var i = 0; i < count; i++) {
target.setUnchecked(i, getUnchecked(i));
}
}
return target;
}