From: Michael Neumann <mneumann@...>
Date: 2008-05-08T23:48:52+09:00
Subject: Re: lambda, ->, haskell, and so on

ara howard wrote:
> 
> On Apr 30, 2008, at 9:26 PM, Dave Thomas wrote:
>> This is one of those e-mails that I know from the start to be futile, 
>> but...
>>
>> For a while now, the
>>
>>     -> (params) { block }
>>
>> syntax in Ruby 1.9 has bothered me, but I've never been sure why. 
>> Today, while playing with pure, it struck me. The '->' sequence is in 
>> an unexpected place. Having played with some functional languages, I'm 
>> used to lambdas being written
>>
>>  \ params -> block
> 
> i like the '->' because it suggests very nice multi-block syntax
> 
> filter(
> 
>   :before -> { buf.upcase },
> 
>   :after -> { bug.downcase }
> 
> )

Note that this already works in ruby19:

   filter before: -> { buf.upcase }, after: -> { buf.downcase}

Regards,

   Michael