16 Buffers [buffer]

16.10 Buffer arithmetic [buffer.arithmetic]

mutable_buffer operator+(const mutable_buffer& b, size_t n) noexcept; mutable_buffer operator+(size_t n, const mutable_buffer& b) noexcept;

1

Returns: A mutable_buffer equivalent to 

mutable_buffer(
  static_cast<char*>(b.data()) + min(n, b.size()),
  b.size() - min(n, b.size()));

const_buffer operator+(const const_buffer& b, size_t n) noexcept; const_buffer operator+(size_t n, const const_buffer& b) noexcept;

2

Returns: A const_buffer equivalent to 

const_buffer(
  static_cast<const char*>(b.data()) + min(n, b.size()),
  b.size() - min(n, b.size()));