23   constexpr Vector() : start_(nullptr), length_(0) {}  in Vector()
25   Vector(T* data, size_t length) : start_(data), length_(length) {  in Vector()
30   explicit constexpr Vector(T (&arr)[N]) : start_(arr), length_(N) {}  in Vector()
40     DCHECK_LE(to, length_);  in SubVector()
46     DCHECK(length_ <= static_cast<size_t>(std::numeric_limits<int>::max()));  in length()
47     return static_cast<int>(length_);  in length()
51   constexpr size_t size() const { return length_; }  in size()
54   constexpr bool is_empty() const { return length_ == 0; }  in is_empty()
61     DCHECK_LT(index, length_);
70     DCHECK_LT(0, length_);  in last()
71     return start_[length_ - 1];  in last()
76   constexpr iterator end() const { return start_ + length_; }  in end()
80     T* result = NewArray<T>(length_);  in Clone()
81     for (size_t i = 0; i < length_; i++) result[i] = start_[i];  in Clone()
82     return Vector<T>(result, length_);  in Clone()
114     DCHECK(length <= length_);  in Truncate()
115     length_ = length;  in Truncate()
123     length_ = 0;  in Dispose()
127     DCHECK_LE(offset, length_);
128     return Vector<T>(start_ + offset, length_ - offset);
132     DCHECK_LE(offset, length_);
134     length_ -= offset;
151     if (length_ != other.length_) return false;
153     for (size_t i = 0; i < length_; ++i) {
163   size_t length_;  variable
196       : data_(std::move(data)), length_(length) {  in OwnedVector()
197     DCHECK_IMPLIES(length_ > 0, data_ != nullptr);  in OwnedVector()
206       : data_(other.ReleaseData()), length_(other.size()) {}  in OwnedVector()
209   constexpr size_t size() const { return length_; }  in size()
212   constexpr bool is_empty() const { return length_ == 0; }  in is_empty()
216     DCHECK_IMPLIES(length_ > 0, data_ != nullptr);  in start()
249   size_t length_ = 0;  variable