public static BinaryIndex end(int digits) {
BinaryIndex tmp = BinaryIndex.begin(digits);
tmp.c_ = true;
return tmp;
}
public Pack<T> call() {
BinaryIndex lower = BinaryIndex.begin(this.items_.size());
BinaryIndex upper = BinaryIndex.end(this.items_.size());
return this.extract(this.call(lower, upper));
}
