Very Computer

I'm reading "learning Perl" and have tried some of the exercises and have
had some sucsess runnitn them on Win(NT). But I've had some problems getting
them to work on a linux OS.

The following hash:

%words =qw(
        me    my
        I        it
        one    two
        be      been
);

Print "$words{me}"

returns the following error message:

"Can't modify not in scalar assignment at hash line (number), near ");"

As mentioned, this works on Win(NT) but not RH Linux. I know there are major
differences between the two versions. But I expected the basics to work. Can
anyone give me some direction with this.

Thanks in advance.

<snippage>

Quote:> Print "$words{me}"

If I change this to

  print $words{'me'};

it works on my Linux system.

Quote:> returns the following error message:

> "Can't modify not in scalar assignment at hash line (number), near ");"

Huh?

Quote:> As mentioned, this works on Win(NT) but not RH Linux. I know there are
> major differences between the two versions. But I expected the basics to
> work. Can anyone give me some direction with this.

Not that much of a difference... Are you sure that's the error you got???

--
Ciaran McCreesh

www:      http://www.opensourcepan.co.uk/

I think in this case, since a similar hash structure works fine under
Linux, is that your post, as an attachment, the snippet of Perl code
(containing your hash) that yields in your posted error.  Remember, a
single keystroke can make all the difference in the world.  For
example, you have "Print" instead of "print", which will fail in Perl
as a syntax error.  Also, if your code snippet is not in full context,
errors can originate in one place, and manifest themselves somewhere
else.

Chris

Quote:>I'm reading "learning Perl" and have tried some of the exercises and have
>had some sucsess runnitn them on Win(NT). But I've had some problems getting
>them to work on a linux OS.

>The following hash:

>%words =qw(
>        me    my
>        I        it
>        one    two
>        be      been
>);

>Print "$words{me}"

>returns the following error message:

>"Can't modify not in scalar assignment at hash line (number), near ");"

>As mentioned, this works on Win(NT) but not RH Linux. I know there are major
>differences between the two versions. But I expected the basics to work. Can
>anyone give me some direction with this.

>Thanks in advance.

change your print line to (pay attention to case and punctuation):

print $words{me} ;
^                ^

small p in print, end with semicolon. Your scripts will work on Linux no
problem, if you add  #!/usr/bin/perl -w (for RedHat Linux)
and change
print $words{me};  to: print "$words{me}\n";

Only necessary if the key name is more than one word:

        $words{'me too'} = boo;
        print "$words{'me too'}\n";

Chris

On Thu, 29 Nov 2001 13:06:03 +1100, "Skeleton Man"

Have discovered the problem had nothing to do with OS or the way I
originally wrote the script.  The problem turned out to be a transposed
shebang. I began the file with !# and corrected it with #!. All my scripts
work better. Thanks for the help and sorry for consuming your time on
foolishness.