From: Josselin <josselin@...>
Date: 2007-03-06T01:50:08+09:00
Subject: Re: Nested blocks

On 2007-03-05 17:31:31 +0100, Robert Klemme <shortcutter@googlemail.com> said:

> On 05.03.2007 17:21, Josselin wrote:
>> On 2007-03-05 17:00:58 +0100, Robert Klemme <shortcutter@googlemail.com> said:
>> 
>>> On 05.03.2007 16:37, hemant wrote:
>>>> On 3/5/07, Josselin <josselin@wanadoo.fr> wrote:
>>>>> I am trying to nest 2 blocks, it's wrong but but I cannot find why ..
>>>>> need some help.. I get only one resulting item
>>>>> 
>>>>> I get  info in geocodes Array (3 items) , need to get some of them into
>>>>> 'places' another Array
>>>>> 
>>>>>       places = [ {:search => adresse}]
>>>>> 
>>>>>       geocodes.each {  | geocode |
>>>>>            places.collect { | place |
>>>>>                 place[:address] = geocode[:address]
>>>>>                 place[:latitude] = geocode[:latitude]
>>>>>                 place[:longitude] = geocode[:longitude]
>>>>>           }
>>>>>       }
>>>>> 
>>>>> geocodes.nitems => 3
>>>> 
>>>> #collect doesn't modify the existing Enumerable  and normally returns
>>>> a Enumerable/Array.
>>>> In other words, your inner block doesn't modify places array at all.
>>> 
>>> No need for collect or collect! at all since he is modifying the 
>>> Hash(es) inside places.  And since places contains only 1 element it 
>>> still does so after the iteration.  Josselin, what do you expect to get?
>>> 
>>> Kind regards
>>> 
>>>     robert
>> 
>> Thanks  for your comments..
>> 
>> well I expect to get 3 items (one for each geocodes item)
>> where   places[i][:longitude] = geocodes[i][:longitude], .....
>> I know that I could do an iteration (as in C) but I tried to do it 
>> without using an indexation ...
>> 
>> places[i]
>> => {:longitude=> geocodes[i][longitude], 
>> :latitude=>geocodes[i][longitude], :address=>geocodes[i][address]}
>> 
>> joss
>> 
>> 
> result = geocodes.map do |geocode|
>    {:search => adresse, :address => geocode[:address], ...}
> end
> 
> 	robert

thanks..   so map and collect give the same result... not easy to 
forget iteration model ... so powerful methods w Ruby...