1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/epee/include/span.h b/contrib/epee/include/span.h
index 174915ecf..cfb5b1a17 100644
--- a/contrib/epee/include/span.h
+++ b/contrib/epee/include/span.h
@@ -109,6 +109,8 @@ namespace epee
     constexpr std::size_t size() const noexcept { return len; }
     constexpr std::size_t size_bytes() const noexcept { return size() * sizeof(value_type); }
 
+    const T &operator[](size_t idx) const { return ptr[idx]; }
+
   private:
     T* ptr;
     std::size_t len;
@@ -161,4 +163,12 @@ namespace epee
     static_assert(!has_padding<T>(), "source type may have padding");
     return {reinterpret_cast<std::uint8_t*>(std::addressof(src)), sizeof(T)};
   }
+
+  //! make a span from a std::string
+  template<typename T>
+  span<const T> strspan(const std::string &s) noexcept
+  {
+    static_assert(std::is_same<T, char>() || std::is_same<T, unsigned char>() || std::is_same<T, int8_t>() || std::is_same<T, uint8_t>(), "Unexpected type");
+    return {reinterpret_cast<const T*>(s.data()), s.size()};
+  }
 }