update zenum

bean/zenum.hpp

@@ -5,27 +5,18 @@
 namespace iflytop {
 class ZEnum {
  public:
-  int         val;
-  char const* name;
-  char const* chName;
+  const int   val;
+  const char* name;
+  const char* chName;
 
   ZEnum(int val, const char* name, const char* chName) : val(val), name(name), chName(chName) {}
 
-  bool isEq(int val) { return this->val == val; }
-  bool isEq(ZEnum* role) { return this->val == role->val; }
+  bool isEq(int val) const { return this->val == val; }
+  bool isEq(const ZEnum& role) const { return this->val == role.val; }
   bool isEqByChName(const char* chName) { return strcmp(this->chName, chName) == 0; }
 
-  ZEnum(const ZEnum& other) : val(other.val), name(other.name), chName(other.chName) {}
-
-  // :operator=
-  ZEnum& operator=(const ZEnum& other) {
-    if (this != &other) {
-      val    = other.val;
-      name   = other.name;
-      chName = other.chName;
-    }
-    return *this;
-  }
+  // ʵÏÖ¿½±´¹¹Ô캯Êý
+  ZEnum(const ZEnum& role) : val(role.val), name(role.name), chName(role.chName) {}
 };
 
 }  // namespace iflytop