First commitHEADmain

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/ft_lstmap.c b/lib/ft_lstmap.c
new file mode 100644
index 0000000..ed5e7c3
--- /dev/null
+++ b/lib/ft_lstmap.c
@@ -0,0 +1,41 @@
+
+/*
+Libft Copyright (C) 2026 yctct
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "libft.h"
+
+t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))
+{
+	t_list	*newlist;
+	t_list	*newnode;
+
+	if (!lst || !f || !del)
+		return (NULL);
+	newlist = NULL;
+	while (lst)
+	{
+		newnode = ft_lstnew((*f)(lst->content));
+		if (!newnode)
+		{
+			ft_lstclear(&newlist, del);
+			return (NULL);
+		}
+		ft_lstadd_back(&newlist, newnode);
+		lst = lst->next;
+	}
+	return (newlist);
+}