fixed and improved

src/files/Planner/String.h

@@ -29,7 +29,7 @@ public:
 	const char* getCharArray() const { return body.c_str(); }
 	const string& getBody() const { return body; }
 	size_t getLength() const { return body.size(); }
-	bool isEmpty() const { return body.size() != 0; }
+	bool isEmpty() const { return body.size() == 0; }
 	bool contains(const String& s) const { return body.find(s.getBody()) != string::npos; }
 	bool operator==(const String& s) const { return body == s.getBody(); }
 
@@ -68,4 +68,4 @@ public:
    
 String operator+(const String& a, const String& b) {
 	return String((a.getBody() + b.getBody()).c_str());
-}
+}