From: Jeremy McAnally <jeremymcanally@...>
Date: 2009-05-15T09:05:23+09:00
Subject: Re: [bikeshed] Syntactic sugar idea

Mmm losing the $ would then render RSpec completely inoperable since
it has an it method.

--Jeremy

On Thu, May 14, 2009 at 9:46 AM, Robert Dober <robert.dober@gmail.com> wrote:
> On Thu, May 14, 2009 at 11:33 AM, Lars Christensen
> <larschbelunktumdk@gmail.com> wrote:
>> On Thu, May 14, 2009 at 4:42 AM, Daniel DeLorme <dan-ml@dan42.com> wrote:
>>> It seems that often an object will be passed into a block only to invoke
>>> a method of that object:
>>>  arr.map{ |obj| obj.some_method }
>>>
>>> So I had the (weird? stupid?) thought that it would be nice to have some
>>> syntactic sugar like this:
>>>  arr.map{ .some_method }
>>
>> I sometimes miss Perl's $_. Without a parser change, it could be used
>> as the default name for block parameters:
>>
>>   arr.sort_by { $_.size }
>>   File.open("logfile", "a") { $_.puts logtext }
>>   arr.map { foo2bar($_) }
>>
>> Then I remember how people abuse it and avoid using appropriately
>> named variables, and I am again happy about the little extra code I
>> have to write.
>>
>>
> Forget the $ and you are spelling out a thought I was bearing with me
> for quite some time, ty Daniel and Joel to bring this up :).
> I always wanted an implicit _ parameter in blocks, as e.g.
> 3.times do puts _ end
>
>
>
>
>
> --
> Si tu veux construire un bateau ...
> Ne rassemble pas des hommes pour aller chercher du bois, préparer des
> outils, répartir les tâches, alléger le travail… mais enseigne aux
> gens la nostalgie de l’infini de la mer.
>
> If you want to build a ship, don’t herd people together to collect
> wood and don’t assign them tasks and work, but rather teach them to
> long for the endless immensity of the sea.
>
> --
> Antoine de Saint-Exupéry
>
>



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