From: Pete Hodgson <phodgson@...>
Date: 2008-10-09T16:10:22+09:00
Subject: Re: Filling a hash from an enumerable


Pe�a, Botp wrote:
> From: Pe�a, Botp [mailto:botp@delmonte-phil.com]
> # >> people_array.map{ |p| p.name }
> # => ["bob", "dave", "jane"]
>
> pls ignore above, i'm still searching my lost brain :)
>
> try #group_by,
>
>   
>> people_array.group_by{ |p| p.name }
>>     
> => {"bob"=>[#<struct Person name="bob", age=12, city="SFO">], "dave"=>[#<struct Person name="dave", age=14, city="NYC">], "jane"=>[#<struct Person name="jane", age=6, city="LDN">]}
>   
Thanks, but that's not quite what I wanted. It creates a hash whose 
values are lonely arrays, rather than a map whose values are the structs 
themselves.

I guess I'll just have to monkey-patch Enumerable with a to_map method. 
Should probably figure out a better name first tho.