On Sun, 07 Dec 2008 12:57:27 +0100, News123 wrote:
> Lie wrote:
>> On Dec 7, 1:02 am, News123 <[EMAIL PROTECTED]> wrote:
>>> What would be interesting would be some syntactical sugar to get rid
>>> of the 'self' (at least in the code body).
>>>
>>> example:
>>> class C:
>>> class_elements a,b,c,d
>>>
>>> def method(self,arg):
>>> global d
>>> a,b,c = arg[0..3]
>>> d = a + b
>>> self.e = a + d
>>>
>>>
>> Nah, that would make it not explicit. Explicit here also means that to
>> refer to self's a, we need to explicitly refer to self.
>
> Well being explicit when trying to suggest an implicit syntax (in order
> to reduce typing) is a little difficult ;-)
>
> Though you're right my main goal is not being implicit but would be
> reducing typing and have shorter source code lines.
>
> If 'global '<varname>' is accepted inside a def, then moving
> 'class_elements <varnames>' inside the def could be acceptable as well
> though it would requiere, that this statement is repeated per def
>
The advantage of explicit self is to easily differentiate instance
variable with local variable/names. When I need to shorten the code, I'll
simply alias it to a local name, no need for syntax change or new keyword.
class C(object):
def __init__(self):
self.a = 2
self.b = 2
self.c = 3
def x(self):
#return ((-self.b + math.sqrt(self.b**2 - 4 * self.a * self.c)) /
(2 * self.a)), ((-self.b - math.sqrt(self.b**2 - 4 * self.a * self.c)) /
(2 * self.a))
a, b, c = self.a, self.b, self.c
sq = math.sqrt
return ((-b + sq(b**2 - 4*a*c)) / (2*a)), ((-b - sq(b**2 -
4*a*c)) / (2*a))
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