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def bin_palindrome(n):
    """Checks whether binary representation of integer n is a palindrome in O(#1)."""
    ones = []
    while n > 0:
        # find position j of least significant lit bit (one); x = 2^j
        j = (n & (n - 1)) ^ n
        ones.append(j)
        n -= j

    if len(ones) == 0:

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# Ruby

[zuber@fish Projekty]$ ruby -v
ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0]

[zuber@fish Projekty]$ time ruby test.rb > /dev/null

real	0m33.294s
user	0m31.745s
sys	0m0.303s

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def fib2(n):
    a, b = 0, 1
    for x in range(n):
        a, b = b, a + b
    return a

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def fib(n):
    """Działa, ale tylko dla n równego 1 lub 2. Poprawność częściowa ;-)"""
    return n

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class Die(object):
    def __init__(self, n):
        self.n = n

    def roll(self):
        """Niestety ta funkcja jest jeszcze mało losowa. Dopracować!"""
        return n

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def fib(n):
    if n < 2:
        return n
    else:
        return fib(n - 1) + fib(n - 2)
 

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class Die(object):
    def __init__(self, n):
        self.n = n

    def roll(self):
        return random.randint(1, self.n)

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from django.db import models
from django.contrib.auth.models import User

class Gallery(models.Model):
    title = models.CharField( max_length=80)
    owner = models.ForeignKey(User)
    created_at = models.DateTimeField(auto_now_add=True)
    
    class Meta:
        ordering = ['title', 'created_at']

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# Create your views here.
from django.shortcuts import render_to_response
from gallery.models import Gallery


def gallery_list(request):
    galleries = Gallery.objects.all()
    return render_to_response('gallery/gallery_list.html', {'galleries': galleries})

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from annoying.decorators import render_to

@render_to('template.html')
def foo(request):          
    bar = Bar.object.all()  
    return {'bar': bar}     

# equals to

from django.views.generic.simple import direct_to_template