This project is a very useful one. The goal is to make a function which reads a single line from a file descriptor, assuming it isn't being tampered with in between calls to the function.
Mine works with multiple file descriptors. It also has no memory leaks!
GNL will automatically free appropriately whenever it reaches EOF.
char *line;
get_next_line(fd, &line); // To get a single line
...
ft_strdel(&line); // You should free after you're done using your line
while (get_next_line(fd, &line))
{
ft_putstr(line); // Here we'll just output line that has been read
... // Here we do something with line
ft_strdel(&line); // Free the line to avoid leaking memory
}