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Libft is an individual project at 42 that requires to 
re-create some standard C library and some additional functions.

-------Functions from <ctype.h>---------

ft_isalpha - checks for an alphabetic character.
ft_isdigit - check for a digit.
ft_isalnum - checks for an alphanumeric character.
ft_isascii - checks whether c fits into the ASCII character set.
ft_isprint - checks for any printable character.
ft_toupper - convert char to uppercase.
ft_tolower - convert char to lowercase.

-------Functions from <string.h>-------

ft_strlen - calculate the length of a string.
ft_memset - fill memory with a constant byte.
ft_bzero - zero a byte string.
ft_memcpy - copy memory area.
ft_memmove - copy memory area.
ft_strlcpy - copy string to a specific size.
ft_strlcat - concatenate a string to a specific size.
ft_strchr - locate character in a string.
ft_strrchr - locate character in a string.
ft_strncmp - compare two strings.
ft_memchr - scan memory for a character.
ft_memcmp - compare memory areas.
ft_strnstr - locate a substring in a string.
ft_strdup - creates a duplicate for the string passed as a parameter.

-------Functions from <stdlib.h>-------

ft_atoi - convert a string to an integer.
ft_calloc - allocates memory and sets its bytes' values to 0.

-------Non-standard functions-------

ft_substr - returns a substring from a string.
ft_strjoin - concatenates two strings.
ft_strtrim - trims the beginning and end of a string with a specific set of chars.
ft_split - splits a string using a char as parameter.
ft_itoa - converts a number into a string.
ft_strmapi - applies a function to each character of a string.
ft_striteri - applies a function to each character of a string.
ft_putchar_fd - output a char to a file descriptor.
ft_putstr_fd - output a string to a file descriptor.
ft_putendl_fd - output a string to a file descriptor, followed by a new line.
ft_putnbr_fd - output a number to a file descriptor.

-------Linked list functions-------

ft_lstnew - creates a new list element.
ft_lstadd_front - adds an element at the beginning of a list.
ft_lstsize - counts the number of elements in a list.
ft_lstlast - returns the last element of the list.
ft_lstadd_back - adds an element at the end of a list.
ft_lstclear - deletes and free list.
ft_lstiter - applies a function to each element of a list.
ft_lstmap - applies a function to each element of a list.

-------How to use it?-------

git clone https://github.com/dashadsh/libft
cd libft
make

To compile a <filename.c> use:

gcc <filename.c> -L. -lft
OR
gcc <filename.c> ./libft.a