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Re: [Metacello] Re: Determining what Metacello would load

Posted by stephane ducasse on Dec 09, 2011; 7:59am
URL: https://forum.world.st/Determining-what-Metacello-would-load-tp4170701p4175742.html


On Dec 8, 2011, at 11:16 PM, Mariano Martinez Peck wrote:

> Thanks for the explanaiton. It turns I was wrong, I thought #record was downloadind the mcz files, but it seems this is only done by #fetch, which makes completly sense!
> I will update the chapter.

thanks mariano

you can add that just after the record paragraph

Stef

> Thanks Sean for asking.
>
>
>
> On Thu, Dec 8, 2011 at 8:02 PM, Dale Henrichs <[hidden email]> wrote:
> The difference between #fetch: and #record: is that:
>
>  #fetch: accesses and downloads the mcz files from the repository
>
>  #record: simply records which mcz files should be downloaded
>
> So #record: will run a lot faster than #fetch:.
>
> While we're in the neighborhood:
>
>  #load: does a #fetch: followed by a #doLoad on the result of the #fetch:
>
> This means you can do a #fetch:, inspect the result to peruse the list of packages that will be loaded and then resume the load with a #doLoad if you approve of the load list...
>
> Dale
>
>
> ----- Original Message -----
> | From: "Mariano Martinez Peck" <[hidden email]>
> | To: [hidden email]
> | Cc: [hidden email]
> | Sent: Thursday, December 8, 2011 1:20:33 AM
> | Subject: [Metacello] Re: [sbe-discussion] Determining what Metacello would load
> |
> |
> |
> |
> | On Wed, Dec 7, 2011 at 11:04 PM, Sean P. DeNigris <
> | [hidden email] > wrote:
> |
> |
> | The Metacello chapter is great, especially the workflow part - thank
> | you.
> |
> |
> | Thanks. If you have feedback, as this one, as well as English
> | corrections, PLEASE give it. You can hace access to the latex files
> | if you want.
> |
> |
> |
> |
> | I would mention fetching, which is very useful for testing configs
> | and
> | before accidentally loading the wrong thing. For example, printing
> | "ConfigurationOfMyProject project bleedingEdge fetch loadDirective"
> | gives you a description of what would be loaded in the current image.
> |
> |
> |
> | The chapter says:
> |
> |
> | -----------
> | \paragraph{Debugging Configuration.}
> |
> |
> | If you want to simulate the loading of a configuration, without
> | actually loading it, you should use \ct{record:} instead of
> | \ct{load:}. Then to get the result of the simulation, you should
> | send it the message \mthind{loadDirective}{loadDirective} as
> | follows:
> |
> | \begin{code}{}
> | ((ConfigurationOfCoolBrowser project version: '0.2')
> | !\textbf{record:}!
> | { 'CoolBrowser-Core' .
> | 'CoolBrowser-Addons' }) !\textbf{loadDirective}!.
> | \end{code}
> |
> | --------
> |
> |
> | So what is the difference between both? one uses #fetch and one uses
> | #record. I don't know exactly the differences but it sounds that
> | #record is more closed to reality (#load) than #fetch. Dale ?
> |
> |
> | Thanks!
> |
> |
> |
> | Sean
> |
> | --
> | View this message in context:
> | http://forum.world.st/Determining-what-Metacello-would-load-tp4170701p4170701.html
> | Sent from the Pharo By Example mailing list archive at Nabble.com.
> | _______________________________________________
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> |
> |
> |
> | --
> | Mariano
> | http://marianopeck.wordpress.com
> |
> |
>
>
>
> --
> Mariano
> http://marianopeck.wordpress.com
>
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