24 Containers library [containers]

24.7 Views [views]

24.7.2 Contiguous access [views.contiguous]

24.7.2.2 Class template span [views.span]

24.7.2.2.6 Element access [span.elem]

🔗
constexpr reference operator[](size_type idx) const;
1
#
Preconditions: idx < size() is true.
2
#
Effects: Equivalent to: return *(data() + idx);
🔗
constexpr reference at(size_type idx) const;
3
#
Returns: *(data() + idx).
4
#
Throws: out_of_range if idx >= size() is true.
🔗
constexpr reference front() const;
5
#
Preconditions: empty() is false.
6
#
Effects: Equivalent to: return *data();
🔗
constexpr reference back() const;
7
#
Preconditions: empty() is false.
8
#
Effects: Equivalent to: return *(data() + (size() - 1));
🔗
constexpr pointer data() const noexcept;
9
#
Effects: Equivalent to: return data_;