def replace_if_same(self, key, old_value, new_value):
        """
        Replaces the entry for a key only if it is currently mapped to a given value.

        This is equivalent to:
            >>> if map.contains_key(key) and map.get(key).equals(old_value):
            >>>     map.put(key, new_value)
            >>>     return true
            >>> else:
            >>>     return false
        except that the action is performed atomically.

        **Warning: This method uses __hash__ and __eq__ methods of binary form of the key, not the actual implementations
        of __hash__ and __eq__ defined in key's class.**

        :param key: (object), the specified key.
        :param old_value: (object), replace the key value if it is the old value.
        :param new_value: (object), the new value to replace the old value.
        :return: (bool), ``true`` if the value was replaced.
        """
        check_not_none(key, "key can't be None")
        check_not_none(old_value, "old_value can't be None")
        check_not_none(new_value, "new_value can't be None")

        key_data = self._to_data(key)
        old_value_data = self._to_data(old_value)
        new_value_data = self._to_data(new_value)

        return self._replace_if_same_internal(key_data, old_value_data, new_value_data)
def replace_if_same ( self , key , old_value , new_value ) : check_not_none ( key , "key can't be None" ) check_not_none ( old_value , "old_value can't be None" ) check_not_none ( new_value , "new_value can't be None" ) key_data = self . _to_data ( key ) old_value_data = self . _to_data ( old_value ) new_value_data = self . _to_data ( new_value ) return self . _replace_if_same_internal ( key_data , old_value_data , new_value_data )
Replaces the entry for a key only if it is currently mapped to a given value.

        This is equivalent to:
            >>> if map.contains_key(key) and map.get(key).equals(old_value):
            >>>     map.put(key, new_value)
            >>>     return true
            >>> else:
            >>>     return false
        except that the action is performed atomically.

        **Warning: This method uses __hash__ and __eq__ methods of binary form of the key, not the actual implementations
        of __hash__ and __eq__ defined in key's class.**

        :param key: (object), the specified key.
        :param old_value: (object), replace the key value if it is the old value.
        :param new_value: (object), the new value to replace the old value.
        :return: (bool), ``true`` if the value was replaced.