nodejs
diff --git a/Collapse file
‎src/util-inl.h‎
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+16-8Lines changed: 16 additions & 8 deletions b/Collapse file
‎src/util-inl.h‎
Copy file name to clipboardExpand all lines: src/util-inl.h
+16-8Lines changed: 16 additions & 8 deletions
diff --git a/Collapse file
‎src/util.h‎
Copy file name to clipboardExpand all lines: src/util.h
+4-2Lines changed: 4 additions & 2 deletions b/Collapse file
‎src/util.h‎
Copy file name to clipboardExpand all lines: src/util.h
+4-2Lines changed: 4 additions & 2 deletions
@@ -193,21 +193,29 @@ char ToLower(char c) {
   return std::tolower(c, std::locale::classic());
 }
 
-std::string ToLower(const std::string& in) {
-  std::string out(in.size(), 0);
-  for (size_t i = 0; i < in.size(); ++i)
-    out[i] = ToLower(in[i]);
+template <typename T>
+std::string ToLower(const T& in) {
+  auto it = std::cbegin(in);
+  auto end = std::cend(in);
+  std::string out(std::distance(it, end), 0);
+  size_t i;
+  for (i = 0; it != end; ++it, ++i) out[i] = ToLower(*it);
+  DCHECK_EQ(i, out.size());
   return out;
 }
 
 char ToUpper(char c) {
   return std::toupper(c, std::locale::classic());
 }
 
-std::string ToUpper(const std::string& in) {
-  std::string out(in.size(), 0);
-  for (size_t i = 0; i < in.size(); ++i)
-    out[i] = ToUpper(in[i]);
+template <typename T>
+std::string ToUpper(const T& in) {
+  auto it = std::cbegin(in);
+  auto end = std::cend(in);
+  std::string out(std::distance(it, end), 0);
+  size_t i;
+  for (i = 0; it != end; ++it, ++i) out[i] = ToUpper(*it);
+  DCHECK_EQ(i, out.size());
   return out;
 }
 
 
@@ -365,11 +365,13 @@ inline v8::Local<v8::String> FIXED_ONE_BYTE_STRING(v8::Isolate* isolate,
 
 // tolower() is locale-sensitive.  Use ToLower() instead.
 inline char ToLower(char c);
-inline std::string ToLower(const std::string& in);
+template <typename T>
+inline std::string ToLower(const T& in);
 
 // toupper() is locale-sensitive.  Use ToUpper() instead.
 inline char ToUpper(char c);
-inline std::string ToUpper(const std::string& in);
+template <typename T>
+inline std::string ToUpper(const T& in);
 
 // strcasecmp() is locale-sensitive.  Use StringEqualNoCase() instead.
 inline bool StringEqualNoCase(const char* a, const char* b);