- What is libft?
- What kind of functions should I implement?
- How do I use the library?
- How to test my project?
[Libft][1] is an individual project at [42][2] that requires us to re-create some standard C library functions including some additional ones that can be used later to build a library of useful functions for the rest of the program. Disclaimer: Reinventing the wheel is bad, 42 makes us do this just so we can have a deeper understanding of data structures and basic algorithms. At 42 we're not allowed to use some standard libraries on our projects, so we have to keep growing this library with our own functions as we go farther in the program.
there are 2 sections:
- Libc Functions: Some of the standard C functions
- Bonus Functions: Functions 42 deems will be useful for linked list manipulation
ft_isascii- test for ASCII character.ft_isalnum- alphanumeric character test.ft_isalpha- alphabetic character test.ft_isdigit- decimal-digit character test.ft_isprint- printing character test (space character inclusive).ft_tolower- upper case to lower case letter conversion.ft_toupper- lower case to upper case letter conversion.
ft_bzero- write zeroes to a byte string.ft_memset- write a byte to a byte string.ft_memchr- locate byte in byte string.ft_memcmp- compare byte string.ft_memmove- copy byte string.ft_memcpy- copy memory area.ft_memccpy- copy string until character found.
ft_strlen- find length of string.ft_strchr- locate character in string (first occurrence).ft_strrchr- locate character in string (last occurence).ft_strnstr- locate a substring in a string (size-bounded).ft_strncmp- compare strings (size-bounded).ft_strnrcmp- reversely compare strings (size-bounded).ft_strdup- save a copy of a string (with malloc).ft_strlcpy- size-bounded string copying.ft_strlcat- size-bounded string concatenation.
ft_putchar_fd- output a character to given file.ft_putstr_fd- output string to given file.ft_putendl_fd- output string to given file with newline.ft_putnbr_fd- output integer to given file.ft_itoa- convert integer to ASCII string.ft_substr- extract substring from string.ft_strtrim- trim beginning and end of string with the specified characters.ft_strjoin- concatenate two strings into a new string (with malloc).ft_split- split string, with specified character as delimiter, into an array of strings.ft_strmapi- create new string from modifying string with specified function.
ft_lstnew- create new list.ft_lstsize- count elements of a list.ft_lstlast- find last element of list.ft_lstadd_back- add new element at end of list.ft_lstadd_front- add new element at beginning of list.ft_lstdelone- delete element from list.ft_lstclear- delete sequence of elements of list from a starting point.ft_lstiter- apply function to content of all list's elements.ft_lstmap- apply function to content of all list's elements into new list.
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Clone this repo and cd into it, make sure it's called
42_Libft:git clone https://github.com/aoumad/42_Libft cd 42_Libft/ - run `make` or `make libft` to compile `libft.a` - run `make clean` to delete tmp files after compile (only `libft.a` will be remain) - run `make fclean` to delete all files after compile - run `make cmake` if you change any filename.c/h to update the configuration of build (and include new file) - run `make re` to recompile all files -
Include
To use `libft` in you project: - just `#include <libft.h>` - compile you files with `-I /libft/includes` - compile `libft` - link you binary with `-L /libft -lft` -
Debug
If you run `make` or `make libft`, the compiler will compile the library with the `-O3 -Wall -Wextra -Werror` flags for better code performance and strict error checking! But if you want to debug some code, you probably want to ignore warnings and be able to use a debugger (lldb, gdb, etc.). In that case - run `make debug`