Method substr

include/xgboost/string_view.h:45–49

NOLINT

  [[nodiscard]] constexpr std::size_t size() const { return size_; }       // NOLINT
  [[nodiscard]] constexpr bool empty() const { return size() == 0; }       // NOLINT
  [[nodiscard]] StringView substr(std::size_t beg, std::size_t n) const {  // NOLINT
    CHECK_LE(beg, size_);
    std::size_t len = std::min(n, size_ - beg);
    return {str_ + beg, len};
  }
  [[nodiscard]] value_type const* c_str() const { return str_; }  // NOLINT

  [[nodiscard]] constexpr const_iterator cbegin() const { return str_; }         // NOLINT