Python handles globals badly.

MRAB python at mrabarnett.plus.com
Tue Sep 8 19:41:45 CEST 2015


On 2015-09-08 15:31, Ian Kelly wrote:
> On Tue, Sep 8, 2015 at 5:55 AM, Vladimir Ignatov <kmisoft at gmail.com> wrote:
>>>> I had some experience programming in Lua and I'd say - that language
>>>> is bad example to follow.
>>>> Indexes start with 1  (I am not kidding)
>>>
>>> What is so bad about that?
>>
>> It's different from the rest 99.9% of languages for no particular reason.
>
> It's not "different from the rest 99.9% of languages". There are many
> languages that use 1-based indexing, e.g. Matlab, Pascal, Fortran.
>
In Pascal you specify both the lower and the upper bounds.

> None of those are even the worst offender here, IMO. That honor goes
> to Visual Basic 6, where the default lower bound is 0, but the
> programmer has the option of declaring an array to use any lower bound
> they want, or even globally change the default. As a result you have
> to look up the array declaration to know the lower bound, and even
> then you can't be sure if it's not explicit. The correct way to
> iterate over a loop in VB 6 is thus not "FOR i = 0 TO n-1", but "FOR i
> = LBound(arr) TO UBound(arr)" which is overly verbose and means that
> you can't even be sure what indexes you're actually iterating over
> inside the loop.
>
> I believe this wart is fixed in VB .NET.
>



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