C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

2025-06-12 16:27:23 +00:00 · 2015-04-30 23:21:26 +10:00
parent 8a2fc65e0a
commit d7dfe94e11
1 changed files with 12 additions and 2 deletions
--- a/exprtk.hpp
+++ b/exprtk.hpp
@ -170,6 +170,16 @@ namespace exprtk
                is_digit(symbol[3]);
      }

+      inline const char& front(const std::string& s)
+      {
+         return s[0];
+      }
+
+      inline const char& back(const std::string& s)
+      {
+         return s[s.size() - 1];
+      }
+
      inline std::string to_str(int i)
      {
         if (0 == i)
@ -32073,8 +32083,8 @@ namespace exprtk
         }

         if (
-              ('{' == expression.front()) &&
-              ('}' == expression.back ())
+              ('{' == details::front(expression)) &&
+              ('}' == details::back (expression))
            )
            mod_expression += "~" + expression + ";";
         else