aj07mm

# 3 = 2^2
# x = 2

def qsort(arr):
    print(arr)
    if len(arr) == 0:
        return arr

    pivot = arr[0]
    sup_arr = []

aj07mm

from collections import deque

grafo = {}
grafo["voce"] = ["alice", "bob", "claire"]
grafo["bob"] = ["anuj", "peggy"]
grafo["alice"] = ["peggy"]
grafo["claire"] = ["thom", "jonny"]
grafo["anuj"] = []
grafo["peggy"] = []
grafo["thom"] = []

aj07mm

(define (fact x)
  (if (= x 0) 1
      (* x (fact (- x 1)))))

(define (fact x)
  (define (fact-tail x accum)
    (if (= x 0) accum
        (fact-tail (- x 1) (* x accum))))
  (fact-tail x 1))

aj07mm

class ReadWriteSerializerMethodField(serializers.Field):
    def __init__(self, method_name=None, **kwargs):
        self.method_name = method_name
        kwargs['source'] = '*'
        #kwargs['read_only'] = True
        super(ReadWriteSerializerMethodField, self).__init__(**kwargs)

    def bind(self, field_name, parent):
        self.field_name = field_name
        # In order to enforce a consistent style, we error if a redundant

aj07mm

"""
user=> (transduce (map inc) + 0 [1 2 3])
9
user=> (transduce (map inc) - 10 [1 2 3])
-1

"""

def transduce(transducer, reducer, iterable, memo):
    return reduce(transducer(reducer), iterable, memo)

aj07mm

(defn transducer [rf]
    (fn
      ([] (rf))
      ([result] (rf result))
      ([result input] (rf result input))))


(defn transducer [rf] # rf eh +
    (fn
      ([result] (rf result 0))

aj07mm

(define (add-streams s1 s2)
  (stream-map + s1 s2))

(define (scale-stream stream factor)
  (stream-map (lambda (x) (* x factor)) stream))

(define (integral delayed-integrand initial-value dt)
  (define int
    (cons-stream initial-value
                 (let ((integrand (force delayed-integrand)))

aj07mm

def derive(obj):
    from django.contrib.admin.utils import NestedObjects
    from django.db import DEFAULT_DB_ALIAS
    from django.db.models.fields.related import ForeignKey
    """
        Derive a new model instance from previous one,
        and point all related fields to the new instance
    """
    obj2 = copy.copy(obj)
    obj2.pk = None

aj07mm

def get_image_file(name='test.png', ext='png', size=(50, 50), color=(256, 0, 0)):
    from StringIO import StringIO
    from PIL import Image
    from django.core.files import File

    file_obj = StringIO()
    file_obj.write('')
    image = Image.new("RGBA", size=size, color=color)
    image.save(file_obj, ext)
    file_obj.seek(0)

aj07mm

function debounce(fn, delay) {
  var timer = null;
  return function () {
    var context = this, args = arguments;
    clearTimeout(timer);
    timer = setTimeout(function () {
      fn.apply(context, args);
    }, delay);
  };
}