diff --git a/srcs/bonus/a.out b/srcs/bonus/a.out
index a1ab014..fbebddb 100755
Binary files a/srcs/bonus/a.out and b/srcs/bonus/a.out differ
diff --git a/srcs/bonus/ft_lstiter.c b/srcs/bonus/ft_lstiter.c
new file mode 100644
index 0000000..9da910e
--- /dev/null
+++ b/srcs/bonus/ft_lstiter.c
@@ -0,0 +1,88 @@
+/*
+**	go through all elements of the list and apply the function f to each of them
+*/
+
+/*	
+**	#include <libc.h>
+**	
+**	typedef struct		s_list
+**	{
+**		void			*content;
+**		struct s_list	*next;
+**	}					t_list;
+**	
+**	void	*ft_memcpy(void *dst, const void *src, size_t n)
+**	{
+**		size_t	i;
+**		char	*ptr;
+**		char	*ptr2;
+**	
+**		ptr = (char *)dst;
+**		ptr2 = (char *)src;
+**		i = -1;
+**		while (++i < n)
+**			ptr[i] = ptr2[i];
+**		return (dst);
+**	}
+**	
+**	t_list	*ft_lstnew(void *content)
+**	{
+**		t_list		*lst;
+**	
+**		if (!(lst = (t_list *)malloc(sizeof(*lst))))
+**			return (NULL);
+**		if (!content)
+**			lst->content = NULL;
+**		else
+**		{
+**			if (!(lst->content = malloc(sizeof(content))))
+**				return (NULL);
+**			ft_memcpy(lst->content, content, sizeof(content));
+**		}
+**		lst->next = NULL;
+**		return (lst);
+**	}
+**	
+**	void	ft_lstiter(t_list *lst, void (*f)(void*));
+**	
+**	void	to_uppercase(void *element)
+**	{
+**		//	*(char*)(((t_list*)element)->content) -= 32;
+**		//	or :
+**		t_list	*tmp;
+**
+**		tmp = (t_list*)element;
+**		*(char*)(tmp->content) -= 32;
+**	}
+**	int	main(void)
+**	{
+**		t_list	*toto;
+**		void	to_uppercase(void*);
+**	
+**		toto = ft_lstnew("a");
+**		toto->next = ft_lstnew("b");
+**		toto->next->next = ft_lstnew("c");
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		printf("---------------------------\n");
+**		ft_lstiter(toto, to_uppercase);
+**		printf("toto->data          :%c\n",*(char*)(toto->content));
+**		printf("toto->nxt->data     :%c\n",*(char*)(toto->next->content));
+**		printf("toto->nxt->nxt->data:%c\n",*(char*)(toto->next->next->content));
+**		printf("toto->nxt->nxt->nxt :%s\n",(char*)(toto->next->next->next));
+**		return (0);
+**	}
+*/	
+
+#include "libft.h"
+
+void	ft_lstiter(t_list *lst, void (*f)(void *))
+{
+	if (!lst)
+		return ;
+	if (lst->next)
+		ft_lstiter(lst->next, f);
+	f(lst);
+}
diff --git a/srcs/bonus/lstclear.c b/srcs/bonus/lstclear.c
index bbe792d..11161dd 100644
--- a/srcs/bonus/lstclear.c
+++ b/srcs/bonus/lstclear.c
@@ -1,15 +1,3 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   ft_lstdel.c                                        :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2018/11/14 21:10:49 by hulamy            #+#    #+#             */
-/*   Updated: 2018/11/16 13:59:10 by hulamy           ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
-
 #include "libft.h"
 
 void	ft_lstdel(t_list **alst, void (*del)(void *, size_t))
@@ -18,3 +6,4 @@ void	ft_lstdel(t_list **alst, void (*del)(void *, size_t))
 		ft_lstdel(&(*alst)->next, del);
 	ft_lstdelone(alst, del);
 }
+
diff --git a/srcs/bonus/ft_lstdelone.c b/srcs/bonus/lstdelone.c
similarity index 100%
rename from srcs/bonus/ft_lstdelone.c
rename to srcs/bonus/lstdelone.c
diff --git a/srcs/bonus/lstiter.c b/srcs/bonus/lstiter.c
deleted file mode 100644
index 0f791be..0000000
--- a/srcs/bonus/lstiter.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   ft_lstiter.c                                       :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2018/11/14 21:11:14 by hulamy            #+#    #+#             */
-/*   Updated: 2018/11/16 14:01:10 by hulamy           ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
-
-#include "libft.h"
-
-void	ft_lstiter(t_list *lst, void (*f)(t_list *elem))
-{
-	if (!lst)
-		return ;
-	if (lst->next)
-		ft_lstiter(lst->next, f);
-	f(lst);
-}