Chouser

(ns n01se.citystate)

(defn vitality
  "Vitality of city."
  [city])

(defn owner
  "Owning city. None is returned if no owner exists."
  [city])

Chouser

(defn array-type
  "Return a string representing the type of an array with dims
  dimentions and an element of type klass.
  For primitives, use a klass like Integer/TYPE
  Useful for type hints of the form: ^#=(array-type String) my-str-array"
  ([klass] (array-type klass 1))
  ([klass dims]
     (.getName (class
                (apply make-array
                       (if (symbol? klass) (eval klass) klass)

Chouser

Clojure 1.7.0-beta2

;; ns-unmap doesn't fully take effect on uses of the unmapped var in the same compilation unit:
user=> (let [] (ns-unmap 'user 'first) first)  
#object[clojure.core$first__4107 0x4b8729ff "clojure.core$first__4107@4b8729ff"]

;; ...but has taken effect by the time the next top level form is compiled:
user=> first  
CompilerException java.lang.RuntimeException: Unable to resolve symbol: first in this context, compiling:(NO_SOURCE_PATH:0:0)   

Chouser

(defn tag [tags the-var]
  (binding [*ns* nil]
    (doseq [tag tags]
      (intern (in-ns tag) (.sym the-var) @the-var))))

(tag '[A B C]
  (defn foo [a b]
    (+ a b)))

(A/foo 5 10)

Chouser

: site-counter ( literal-int -- int )
    here cell - { addr }    \ store in 'addr' the address of the literal int preceding this in the user's code
    postpone dup            \ compile code to ...dup the int at the top of the data stack
    postpone 1+             \                 ...increment it
    addr postpone literal   \                 ...push the above 'addr' onto the data stack
    postpone !              \                 ...copy the incremented value INTO THE USERS CODE 
; immediate                 \ do all this at compile time

\ Now for a "normal" word defintion
: bar ( -- )

Chouser

;; A sketch of Clojure-like protocols, implemented in Mal
;; Mal is https://github.com/kanaka/mal

(def! builtin-type (fn* [obj]
  (cond
    (list?    obj) :mal/list
    (vector?  obj) :mal/vector
    (map?     obj) :mal/map
    (symbol?  obj) :mal/symbol
    (keyword? obj) :mal/keyword

Chouser

let slurp filename =
  let ic = open_in filename in
  let rec loop out_str =
    try
      loop out_str ^ (input_line ic) ^ "\n"
    with e ->
      close_in ic;
      out_str in
  loop ""

Chouser

module rec VariantMod
  : sig
    type t = Int of int | Map of t OrderedValMap.t
  end = VariantMod
and OrderedVal
  : sig
    type t = VariantMod.t
    val compare : t -> t -> int
  end
  = struct

Chouser

module MakeVal (MapType : Map.S) =
struct
  let compare = Pervasives.compare
  type map_type = t MapType.t
  and 'a with_meta = { value : 'a; meta : map_type }
  and t =
    | List of t list with_meta
    | Vector of t list with_meta
    | Map of map_type with_meta
    | Int of int

Chouser

(defn paths
  "Returns a lazy sequence of path vectors from path [<start-node>] to
  target in graph."
  [graph target path]
  (let [this-node (peek path)]
    (if (= this-node target)
      [path]
      (->> (get graph this-node)
           (filter #(not-any? (fn [edge] (= edge [this-node %]))
                              (partition 2 1 path)))