The most common usage is to get the last member of an array as with
myarray[$#myarray]
and I realize in Python, this can be done with
myarray[-1]
My current dilemma is that I've got a program that takes one argument
and needs to be run multiple times with this argument being validated
based on the previous one. So proper usage might be
myprog red
myprog blue
myprog green
where it would be wrong to do
myprog red
myprog green
I have a list which gives the proper order
colors = ['red', 'blue', 'green']
There are places where I need to know specifically if I am on the first
or last sequence of runs so early on I get my current index:
now = colors.index(sys.argv[1])
and then later I can compare
if now == 0
or
if now == len(colors) - 1
which is distinctly ugly and I would prefer
if now == $#colors
Keep in mind this is not an exact statement of the problem but I believe
it captures the full context.
Jeff
-----Original Message-----
From: Danny Yoo [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 17, 2005 6:00 PM
To: Smith, Jeff
Cc: [email protected]
Subject: Re: [Tutor] Perl equivalent of $#var
On Tue, 17 May 2005, Smith, Jeff wrote:
> Is there a more Pythonic way to get the Perl equivalent of
> $#var
> other than
> len(var) - 1
Hi Jeff,
Just out of curiosity, where do you use Perl's $#var? Can you show us
the context of its use? If we see context, it might help us find a
Python idiom that fits the usage.
Best of wishes!
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