Comments on: 42 http://blog.dowski.com/2004/06/11/42/ Unfortunately, Christian had a Thwart, and the Magpie stayed in play. Wed, 20 Aug 2008 03:02:32 +0000 http://wordpress.org/?v=2.6 By: christian http://blog.dowski.com/2004/06/11/42/#comment-146 christian Mon, 12 Jul 2004 03:01:13 +0000 http://blog.dowski.com/?p=57#comment-146 Good call. I didn't think of weird math beyond the 42 trick! Thanks for the post. Good call. I didn’t think of weird math beyond the 42 trick! Thanks for the post.

]]> By: Blake Winton http://blog.dowski.com/2004/06/11/42/#comment-144 Blake Winton Thu, 08 Jul 2004 13:19:08 +0000 http://blog.dowski.com/?p=57#comment-144 I think your mult function should return a new define, instead of evalling it, for the following reason:<br /> <br /> >>> class define:<br /> def __init__(self, strnumexpr):<br /> self.val = strnumexpr<br /> def __mul__(self, x):<br /> answer = self.val + '*' + x.val<br /> return eval(answer)<br /> def __repr__(self):<br /> return str(eval(self.val))<br /> <br /> >>> SIX = define('1 + 5')<br /> >>> NINE = define('8 + 1')<br /> >>> SIX<br /> 6<br /> >>> NINE<br /> 9<br /> >>> SIX * NINE<br /> 42<br /> >>> SIX * SIX * SIX<br /> <br /> Traceback (most recent call last):<br /> File "", line 1, in -toplevel-<br /> SIX * SIX * SIX<br /> TypeError: unsupported operand type(s) for *: 'int' and 'instance'<br /> >>> class define:<br /> def __init__(self, strnumexpr):<br /> self.val = strnumexpr<br /> def __mul__(self, x):<br /> answer = self.val + '*' + x.val<br /> return define(answer)<br /> def __repr__(self):<br /> return str(eval(self.val))<br /> <br /> >>> SIX = define('1 + 5')<br /> >>> NINE = define('8 + 1')<br /> >>> SIX<br /> 6<br /> >>> NINE<br /> 9<br /> >>> SIX * NINE<br /> 42<br /> >>> SIX * SIX * SIX<br /> 16 I think your mult function should return a new define, instead of evalling it, for the following reason:

>>> class define:
def __init__(self, strnumexpr):
self.val = strnumexpr
def __mul__(self, x):
answer = self.val + ‘*’ + x.val
return eval(answer)
def __repr__(self):
return str(eval(self.val))

>>> SIX = define(’1 + 5′)
>>> NINE = define(’8 + 1′)
>>> SIX
6
>>> NINE
9
>>> SIX * NINE
42
>>> SIX * SIX * SIX

Traceback (most recent call last):
File “”, line 1, in -toplevel-
SIX * SIX * SIX
TypeError: unsupported operand type(s) for *: ‘int’ and ‘instance’
>>> class define:
def __init__(self, strnumexpr):
self.val = strnumexpr
def __mul__(self, x):
answer = self.val + ‘*’ + x.val
return define(answer)
def __repr__(self):
return str(eval(self.val))

>>> SIX = define(’1 + 5′)
>>> NINE = define(’8 + 1′)
>>> SIX
6
>>> NINE
9
>>> SIX * NINE
42
>>> SIX * SIX * SIX
16

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