fogus

Quirky computing books of the day

<2022-06-21 Tue>

Functional Programming and Its Applications by Darlington, Henderson, and Turner

TWEET:

fogus

/**
 * An interned mapping is one where a var's ns matches the current ns and its sym matches the mapping key.
 * Once established, interned mappings should never change.
 */
private boolean isInternedMapping(Symbol sym, Object o){
	return(o instanceof Var &&
			((Var) o).ns == this &&
			((Var) o).sym.equals(sym));
}

fogus

RESOLUTION

I had an older version of Dart installed in a Flutter dev setup and it seemed that it was being picked up at some point in the init/build process. Removing the old Dart version fixed the errors below.

versions:

OSX

java -version
openjdk version "11.0.8" 2020-07-14

fogus

Object>>chain
	^ ChainProxy new setTarget: self

ChainProxy>>doesNotUnderstand: aMessage
	target := aMessage sendTo: target.
	^ target

ChainProxy>>setTarget: anObject
	target := anObject.
	^ self

fogus

;;;; 0 - naive

(defn take+rest0 [n coll]
  [(->> coll (take n) vec)
   (drop n coll)])

; "Elapsed time: 700 msecs" with (range), take 10
; "Elapsed time: 5860 msecs" with (range), take 100
; "Elapsed time: 818 msecs" with [0...99999], take 10
; "Elapsed time: 6439 msecs" with [0...99999], take 100

fogus

Boardgame you...
don’t like: cards against humanity
think is overhyped: munchkin
think is underappreciated: blockers, klunker, hyle
love: go, gin, homeworlds
can play over and over: hearts
should play more often: tramways, fjords
Got me into hobby: civilization
changed my life: chess
surprised me the most: the mushroom eaters

fogus

;; qualified method expansions from `make-fn`
;; https://github.com/fogus/thneed/blob/master/src/fogus/rdr.clj


;; METHOD: Math/abs
;; SIGS:   [[int] [long] [float] [double]]

(clojure.core/fn abs11949
  ([G__11950]
   (clojure.core/cond

fogus

DECLARE SUB Hugemonad ()
DECLARE SUB Colours ()

SCREEN 9
CLEAR , , 5000
WIDTH , 43
CALL Colours
CALL Hugemonad

LINE (380, 240)-(596, 303), 2, BF

fogus

import random

class Die:
    def __init__(self, n):
        self.sides = n
    
    def roll(self):
        return random.randint(1, self.sides)

dice = [Die(6), Die(6), Die(6)]

fogus

(import (java.lang.invoke MethodHandles
                          MethodHandles$Lookup
                          MethodType
                          MethodHandle))

(def ^MethodHandle abs-handle (.findStatic (MethodHandles/lookup) 
                                           Math 
                                           "abs" 
                                           (MethodType/methodType Long/TYPE Long/TYPE)))