#+title: A collection of helper functions for Advent of Code
#+property: header-args :results none

* Input manipulation
#+begin_src emacs-lisp
  (require 'dash)
  (defun advent/replace-multiple-regex-buffer (regex-list)
    "Takes REGEX-LIST as an alist ( regex . replacement )
  and applies each substitiution to the current buffer"
    (save-excursion
      (-each regex-list (lambda (x)
                          (goto-char (point-min))
                          (replace-regexp (car x) (cdr x))))))
#+end_src

* Maze processing
  #+begin_src emacs-lisp
    (defun advent/split-string-into-char-list (str)
      "Split the string into a list of chars"
      (--map (string-to-char it) (split-string str "\\|.+" t)))
  #+end_src