containers: added methods contains(), remove(), replace(), replaceOrAdd(),

corresponding to contains(), removeIf(), replaceIf(), and replaceOrAdd(), but overloaded for const T& as well as for predicates.
refs #106

src/blackmisc/containerbase.h

@@ -94,6 +94,16 @@ namespace BlackMisc
             return std::any_of(derived().begin(), derived().end(), p);
         }
 
+        /*!
+         * \brief Return true if there is an element equal to given object
+         * \param object is this object in container?
+         * \return
+         */
+        bool contains(const T &object) const
+        {
+            return std::find(derived().begin(), derived().end(), object) != derived().end();
+        }
+
         /*!
          * \brief Return a copy containing only those elements matching a particular key/value pair.
          * \param key1 A pointer to a member function of T.