On Tue, May 31, 2011 at 3:45 PM, Uri Guttman <u...@stemsystems.com> wrote:
>>>>>> "SR" == Sayth Renshaw <flebber.c...@gmail.com> writes:
>
> SR> my $hex = sprintf("ox%o2x\n", $number);
>
> why is the \n there? you just chomp it off. better to not put it in the
> string to begin with.
>
> also that leading char is the letter 'o' which is not the way octal
> numbers are represented. they start with just a zero. also what is the
> 2x part for?
>
> SR> my $oct = sprintf "%o", $number;
>
> SR> When i turn on the assertion
> SR> use assertions ' $hex == $oct == $number ';
>
> SR> I am getting an error that an operator is required. Does that mean i
> SR> cannot compare a hex an octal and a decimal via equality in an
> SR> assertion?
>
> that statement has several problems. == returns a boolean value so you
> can't chain them like that. secondly, the sprintf strings you are
> getting are not converted to the numbers as you think they are. strings
> are only converted to decimal values by default. you need the hex and/or
> oct functions to explicitly convert a hex/octal string to a decimal
> value which can then be compared.
>
> uri
>
> --
> Uri Guttman ------ u...@stemsystems.com -------- http://www.sysarch.com --
> ----- Perl Code Review , Architecture, Development, Training, Support ------
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>
The sprintf function was copied from Perl Monks
http://www.perlmonks.org/?node_id=63074, I am only finishing chapter 2
in beggnng Perl so I don't fully understand it yet.
> are only converted to decimal values by default. you need the hex and/or
> oct functions to explicitly convert a hex/octal string to a decimal
> value which can then be compared.
Does this mean I could not directly compare a hex created from a
decimal with a decimal?
so hex == dec && oct == dec && hex == oct.
sayth
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