From: Robert Klemme <bob.news@...>
Date: 2004-08-31T20:10:24+09:00
Subject: Re: I'm confused about $LOAD_PATH


<tad.bochan@bnpparibas.com> schrieb im Newsbeitrag
news:OFD064BE8B.B2393EA6-ONC1256F01.003B6771@bnpparibas.com...
>
>
> Hi,
> I'm confused about how to update this $: variable in a ruby program.
>
> In the Ruby book PPG  (page 218 in my book) it says that this variable
> is read-only , but in the same sentence,
> it says
> "This variable can be set from within a program to alter the
> default search path; typically programs use $: << dir
> to append dir to the path. [r/o]"
>
> The book says in several places that you can update
> this variable at runtime, BUT, when I try
>      $LOAD_PATH = $LOAD_PATH << "mydir"
>  or
>      $LOAD_PATH = $LOAD_PATH.unshift "mydir"
> I get,
>      "$LOAD_PATH is a read-only variable (NameError)"

You can't assign to $LOAD_PATH but you can change the elements contained in
the Array.  Just do

$LOAD_PATH << "mydir"
$LOAD_PATH.unshift "mydir"

Regards

    robert