1 files changed, 8 insertions, 0 deletions
diff --git a/book/src/binding/string.md b/book/src/binding/string.md
index a7d0790b..d564e00c 100644
--- a/book/src/binding/string.md
+++ b/book/src/binding/string.md
@@ -23,6 +23,10 @@ public:
   String(const char *);
   String(const char *, size_t);
 
+  // Throws std::invalid_argument if not utf-16.
+  String(const char16_t *);
+  String(const char16_t *, size_t);
+
   String &operator=(const String &) noexcept;
   String &operator=(String &&) noexcept;
 
@@ -32,9 +36,13 @@ public:
   const char *data() const noexcept;
   size_t size() const noexcept;
   size_t length() const noexcept;
+  bool empty() const noexcept;
 
   const char *c_str() noexcept;
 
+  size_t capacity() const noexcept;
+  void reserve(size_t new_cap) noexcept;
+
   using iterator = char *;
   iterator begin() noexcept;
   iterator end() noexcept;