From: Frantisek Psotka <frantisek.psotka@...>
Date: 2008-03-10T23:11:54+09:00
Subject: Re: newbie question

yes, i can write

a = b || a

but isn't it more complex. imagine that b is nil. then a = a will be 
evaluated?

maybe time for feature request? new operator a =|| (a = b if b)

(variable = params[:nice_symbol] if params[:nice_symbol] doesnt look 
very nice)


Lars wrote:
> On Mar 10, 11:50 am, Farrel Lifson <farrel.lif...@gmail.com> wrote:
>> On 10/03/2008, Frantisek Psotka <frantisek.pso...@matfyz.cz> wrote:
>>
>> > is in ruby operator for:
>>
>> >  a = b if b
>>
>> >  a (operator) b
>>
>> a ||= b
> 
> "a ||= b" means "a = b unless a".
> 
> I don't think there is an operator for "a = b if b".
> 
> Luckily, "a = b if b" is valid ruby code. "a = b || a" or "a = (b or
> a)" would also work.

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