From: Frank Church <vfcforums@...>
Date: 2007-06-26T18:27:16+09:00
Subject: Re: Some help needed with understanding ruby hashes

Frank Church wrote:
> 
> If a ruby hash rubyhash has a key such as "hashkey" is there a way of
> retrieving the value by the expression rubyhash["hashkey"] ?
> 
> It only seems logical that is rubyhash.has_key?("hashkey") returns true
> rubyhash["hashkey"] should return a value, but it always gives an error.
> 
> I know the same can be achieved via with rubyhash.values_at("hashkey")
> but it appears so inelegant to me.
> 
> I am trying to create an erb template which will use the hash keys here
> such as directory1 directory2 for each directory and the for each
> directory use hash key s such as directory, archivename etc, but I find
> values_at rather inelegant.
> 
> I sorely hope there is some aspect to ruby hashes syntax that I am
> missing.
> 

I tracked the error, I was testing the using the concatenating strings 
without using to_s in the code. ie.

puts "hashkey value is " + rubyhash["hashkey"]

instead of

"hashkey value is " + (rubyhash["hashkey"]).to_s

Regards

Frank

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