On Tue, Jun 26, 2007 at 08:17:06AM -0700, vj wrote:
>I posted too soon:
>
>> Statement 1:
>> my $today = sprintf("%4s%02s%02s", [localtime()]->[5]+1900,
>> [localtime()]->[4]+1, [localtime()]->[3]) ;
>
>1. is localtime the same as time in python?
You could use this instead
-
from time import localtime
today = localtime()
-
'today' would then contain a tuple:
(2007, 6, 26, 17, 41, 27, 327829)
which you could access in a similar way as above (eg: today[0] == 2007)
obviously the order of the values is different from the perl
counterpart.
>2. What does -> ? do in perl?
'->' references a hash (or dict in python) key. In python it would be
localtime()[4]
>3. What is 'my'
'my' declares local data structures (scalars, arrays or hashes) when 'use
strict;'
is defined in the perl script.
>
>> Statement 2:
>> my $password = md5_hex("$today$username") ;
>
>is md5_hex the same as md5.new(key).hexdigest() in python?
Yes it is.
>
>> $msglen = bcdlen(length($msg)) ;
>
>1. here the funciton is being called with the length of variable msg.
>However the function def below does not have any args
>
>> sub bcdlen {
>> my $strlen = sprintf("%04s", shift) ;
>> my $firstval = substr($strlen, 2, 1)*16 + substr($strlen, 3, 1) ;
>> my $lastval = substr($strlen, 0, 1)*16 + substr($strlen, 1, 1) ;
>> return chr($firstval) . chr($lastval) ;
>>
>> }
>
>2. What does shift do above?
'shift' accesses the first argument passed to the function, in this case
the value of length($msg)
>3. is the '.' operator just + in python?
In principle yes.
--
Greg Armer
[EMAIL PROTECTED]
http://www.codelounge.org
If it would be cheaper to repair the old one, the
company will insist on the latest model.
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