From: Martin DeMello <martindemello@...>
Date: 2006-12-01T21:35:42+09:00
Subject: Re: why does openstruct not respond to [] and []=?

On 12/1/06, Robert Klemme <shortcutter@googlemail.com> wrote:
> On 01.12.2006 13:14, Martin DeMello wrote:
> > Took me aback - there seems to be no reason for OpenStruct *not* to
> > permit member access via ostruct[:field] and ostruct['field'].
>
> OpenStruct also does not inherit Enumerable.  I guess the story is, if
> you need a Hash then use a Hash.  The key point of OpenStruct is that
> you can use arbitrary member setters and getters not indexed access.  Is
> there actually a situation where you need both?

I was trying to collect all the binary options to my app in a hash (as
being somewhat less verbose than the standard OptionParser syntax):

{
    :verbose => ["-v", "--[no-]verbose", "run verbosely"],
    :all => ["-A", "--all", "select all files"],
    #....
}.each {|k,v| opt.on(*v) {|i| opts.send(:"#{k}=", i) } }

The last line would have been a lot less ugly as opts[k] = i, and as I
said, there seems no real reason not to allow it.

martin