Re: [groovy-user] Recursivity bug with closure?

Re: [groovy-user] Recursivity bug with closure?

call() is a method on closure which 'calls' the closure.
For instance, when you call a closure, you usually do myClosure(),
which is a shortcut for myClosure.call()

On Sun, Jul 20, 2008 at 8:59 PM, Pierre Thibault <pthibault33@...> wrote:
> What is the subject of 'call'? 'this.call' does not work.
>
> ________________________________
> Pierre
>
> ----- Original Message ----
> From: Guillaume Laforge <glaforge@...>
> To: user@...
> Sent: Sunday, July 20, 2008 2:06:52 PM
> Subject: Re: [groovy-user] Recursivity bug with closure?
>
> Not really, you can also do that.
>
> On Sun, Jul 20, 2008 at 7:23 PM, Jose Noheda <jose.noheda@...> wrote:
>> Is this discouraged for some reason?
>>
>> def factoriel = { int v ->
>>    if (v == 0) {
>>        return 1
>>    } else {
>>        return v * call(v-1)
>>    }
>> }
>>
>> println factoriel(5)
>>
>> Regards,
>>
>> On Sun, Jul 20, 2008 at 10:38 AM, Guillaume Laforge <glaforge@...>
>> wrote:
>>>
>>> Hi Pierre,
>>>
>>> This is because you can't call a closure that hasn't been defined first.
>>> def factoriel
>>> factoriel = { ... }
>>> In that case you'd be able to call factoriel() directly inside the
>>> closure, as it's been defined before use.
>>>
>>> On Sun, Jul 20, 2008 at 8:32 AM, Pierre Thibault <pthibault33@...>
>>> wrote:
>>> > Hello,
>>> >
>>> > I think that I found a recursivity bug with closure. This code does not
>>> > work:
>>> >
>>> > def factoriel = { int v ->
>>> >    if (v == 0) {
>>> >        return 1
>>> >    } else {
>>> >        return v*this.factoriel(v-1)
>>> >    }
>>> > }
>>> >
>>> > println factoriel(5)
>>> >
>>> > But this work well:
>>> >
>>> > def factoriel(int v) {
>>> >    if (v == 0) {
>>> >        return 1
>>> >    } else {
>>> >        return v*this.factoriel(v-1)
>>> >    }
>>> > }
>>> >
>>> > println factoriel(5)
>>> >
>>> > I've tried with Groovy 1.5.5 and 1.5.6.
>>> >
>>> > Any idea?
>>> >
>>> > ________________________________
>>> > Pierre
>>> >
>>> >
>>> > ________________________________
>>> >
>>> > Yahoo! Canada Toolbar : Search from anywhere on the web and bookmark
>>> > your
>>> > favourite sites. Download it now!
>>>
>>>
>>>
>>> --
>>> Guillaume Laforge
>>> Groovy Project Manager
>>> G2One, Inc. Vice-President Technology
>>> http://www.g2one.com
>>>
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>>> To unsubscribe from this list, please visit:
>>>
>>>    http://xircles.codehaus.org/manage_email
>>>
>>>
>>
>>
>
>
>
> --
> Guillaume Laforge
> Groovy Project Manager
> G2One, Inc. Vice-President Technology
> http://www.g2one.com
>
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>
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>
>
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--

-- 
Guillaume Laforge
Groovy Project Manager
G2One, Inc. Vice-President Technology
http://www.g2one.com

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