bayan

;; Ruby has a short cut to specify an array of words: %w(apple bee carrot) → ["apple", "bee", "carrot"]
;; This can't be implemented in Ruby itself, and requires the language designers to implement this (in C).

;; Clojure, being a Lisp, allows anyone to add such a feature directly using a macro:

(defmacro %w [& args] `(map str '~args))

(%w apple bee carrot)
;; → ("apple" "bee" "carrot")

bayan

;; English is the defacto standard when it comes to programming languages.
;; It is used to derive the names of special forms (e.g. if, def, etc) and core functions (find, map, etc).
;;
;; What about when you can't or just don't want to write in English?
;; For example: http://en.wikipedia.org/wiki/Language_policy_in_France
;;
;; How hard would it be to write code using another language?
;; Preprocessing source files using substitution before compiling/running won't allow us to run the code from a REPL.
;; Let's see what we can do in Clojure.
;;

bayan

;; Generating static HTML using Clojure macros

;; It is possible to write a DSL in Clojure that generates HTML markup without the need to write a separate parser and compiler (e.g. HAML).

;; Our aim here would be to write code that converts the following Clojure code into the HTML below it

;; (html
;;  (head)
;;  (body
;;   (h1 "An example")

bayan

### Keybase proof

I hereby claim:

  * I am bayan on github.
  * I am bkhalili (https://keybase.io/bkhalili) on keybase.
  * I have a public key ASA6Uza5arh0TkVrTwC5AYii5ThWrtDUEyjrXtwlLNAD8wo

To claim this, I am signing this object: