From: Jay Levitt <jay@...>
Date: 2007-08-29T11:25:08+09:00
Subject: Re: idiomatic way to assign if not nil?

On Aug 28, 8:00 pm, dbl...@wobblini.net wrote:
> >> On 29 Aug 2007, at 00:30, Jay Levitt wrote:
>
> >>> a = b if b
>
> >>> Does that exist in a DRYer form?
>
> I have to say, when I type this:
>
>    a = b if b
>
> I don't have the feeling that I'm repeating myself; the two b's both
> pull their weight. So I wouldn't worry about it, from the DRY
> perspective.

Yeah, it was more that I was doing a bunch of them at once to deal
with Rails' attr_protected feature while in a unit test, so I ended up
writing:
user.login = options[:login] if options[:login]
user.password = options[:password] if options[:password]
user.other = options[:other] if options[:other]

Felt kinda repetitive.  I guess I could DRY that up in an eval loop.