📖 Libft
Personal home-made Library

💡 What is it?

This is my custom library I made while studying at 1337 and that I will update over time as I study.
Feel free to tell me your thoughts and if there's anything to improve it :)

📚 What is in?

There's a bunch of differents functions, which has been used througout the whole 42 cursus.
There is currently:

• Libft
• ft_printf
• GetNextLine
• Lots of extra functions
• Feel free to discover theme one by one

📜 Side Notes

• The goal of the library is to get to use the least amount of C standard library functions as possible!
• If you are a student of 42 aswell and came for solutions, be aware some functions has been sightly modified
  for little extra handy features

C standard library

C Library <ctype.h>
Libft	Description
ft_isalnum	Checks whether the passed character is alphanumeric.
ft_isalpha	Checks whether the passed character is alphabetic.
ft_isascii	Checks whether the passed character is ASCII.
ft_isdigit	Checks whether the passed character is decimal digit.
ft_isprint	Checks whether the passed character is printable.
ft_tolower	Converts uppercase letters to lowercase.
ft_toupper	Converts lowercase letters to uppercase.
C Library <string.h>
Libft	Description
ft_bzero	Erases the data in the n bytes of the memory block. (Write zeroes)
ft_memchr	Searches for the first occurrence of the character c (an unsigned char) in the first n bytes of the string.
ft_memcmp	Compares the first n bytes of str1 and str2.
ft_memcpy	Copies n characters from src to dest.
ft_memmove	Copies n characters from src to dest. (Non destructive manner)
ft_memset	Copies the character c (an unsigned char) to the first n characters of the string.
ft_strchr	Searches for the first occurrence of the character c (an unsigned char) in the string.
ft_strlcat	Appends string src to the end of dst. It will append at most dstsize - strlen(dst) - 1 characters.
ft_strlcpy	Copies up to dstsize - 1 characters from the string src to dst.
ft_strlen	Computes the length of the string but not including the terminating null character.
ft_strncmp	Compares at most the first n bytes of str1 and str2.
ft_strnstr	Locates the first occurrence of the null-terminated string little in the string big, where not more than len characters are searched.
ft_strrchr	Searches for the last occurrence of the character c (an unsigned char) in the string.
C Library <stdlib.h>
Libft	Description
ft_atoi	Converts the string to an integer (type int).
ft_calloc	Allocates the requested memory initialized to zero bytes.
Non-stantard C Library
Libft	Description
ft_itoa	Converts the int to a string (type char *).
ft_putchar_fd	Outputs the character 'c' to the given file descriptor.
ft_putendl_fd	Outputs the string 's' to the given file descriptor, followed by a newline.
ft_putnbr_fd	Outputs the integer 'n' to the given file descriptor.
ft_putstr_fd	Outputs the string 's' to the given file descriptor.
ft_strdup	Returns a pointer to a null-terminated byte string, which is a duplicate of the string.
ft_striteri	Applies a function to each character of the string.
ft_strjoin	Returns a new string, which is the result of the concatenation of 's1' and 's2'.
ft_strmapi	Applies a function to each character of the string 's' to create a new string.
ft_strtrim	Returns a copy of 's1' with the characters specified in 'set' removed from the beginning and the end of the string.
ft_substr	Returns a substring from the string 's'. The substring begins at index 'start' and is of maximum size 'len'.
Chained lists manipulation
Libft	Description
ft_lstadd_back	Adds the element at the end of the list.
ft_lstadd_front	Adds the element at the beginning of the list.
ft_lstclear	Deletes and frees the given element and every successor of that element, using a given function and free.
ft_lstdelone	Takes as a parameter an element and frees the memory of the element’s content using a function given as a parameter and free the element.
ft_lstiter	Iterates the list and applies a function to the content of each element.
ft_lstlast	Returns the last element of the list.
ft_lstmap	Iterates the list and applies a function to the content of each element. Creates a new list resulting of the successive applications of the function. A 'del' function is used to delete the content of an element if needed.
ft_lstnew	Returns a new element.
ft_lstsize	Counts the number of elements in a list.
get_next_line
Libft	Description
get_next_line	Returns a line read from the file descriptor `fd`. Returns NULL if there are no more characters to read, or if an error occured.
ft_printf
Libft	Description
ft_printf	This function mimics the real `printf` but is limited: Supports these specifiers: 'cspdiuxX%' Supports these flags: '-0#+ '.
some needed function
Libft	Description
ft_2d_len	It calc the lenght of 2D char table. It take table to be calc and return lenght of it.
ft_free	It free 2D char table. It take table to be free and return void.
ft_strsep	Locates, in the string referenced by `*str`, the first occurrence of any character in the string `sep` (or the terminating '\0' character) and replaces it with a '\0'. The location of the next character after the delimiter character (or NULL, if the end of the string was reached) is stored in `*str`. The original value of `*str` is returned. If `*str` is initially NULL, NULL is returned.
ft_strspn	Compares at most `n` bytes from the two strings `s1` and `s2`. It returns an integer less than, equal to, or greater than zero if `s1` is found, respectively, to be less than, to match, or be greater than s2. If `n` is zero, the return value is zero.
ft_atoll	Converts the initial part of the string `str` to a long long. The string may begin with an arbitrary amount of white space followed by a single optional '+' or '-' sign. The remainder of the string is converted to a long long in the obvious manner, stopping at the first character which is not a valid digit. If an overflow occurs, LONG_LONG_MAX is returned and errno is set to ERANGE. If an underflow occurs, LONG_LONG_MIN is returned and errno is set to ERANGE.