From: Daniel N <has.sox@...>
Date: 2007-02-21T09:20:26+09:00
Subject: Re: Checking what a method has returned

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On 2/21/07, Chris Gallagher <cgallagher@gmail.com> wrote:
>
> Hi,
>
> Im looking for a way of checking whether a method has returned true or
> false.
>
> for example i have an want to start off by checking if an image is
> already stored locally by calling " def checkCache". If the image is
> already there it will simply come back the process is complete. If it
> isnt there already it will need to call another method which will be
> called "downloadImage".
>
> What I have for this at the moment is far from complete so feel free to
> change it around:
>
>
> def index
>
> @domains = ['yahoo.com','google.com']
> domains_length = @domains.length
>
>     domains_length.times { |i|
> ######## if checkCache finds that there is no image present then it
> needs to        #########proceed to the next  method which would be
> downloadImage.
>        checkCache(@domains[i])
>        downloadImage(@domains[i])
>       end
>
>     }
> end


If checkCache returns true of false then use inline if / unless.

downloadImage(@domains[i] unless checkCache(@domains[i])

All on one line...  Noice

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