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From Sergei Egorov <bsid...@gmail.com>
Subject Re: re-using a comparison closure
Date Mon, 16 May 2016 16:01:41 GMT
Make it static, i.e. append "static" before "def"

On Mon, May 16, 2016 at 6:57 PM Guy Matz <guymatz@gmail.com> wrote:

> Thanks!  Not working, though.  Getting:
> No such property: compareVersions for class: Sorters
>
> with:
>
> class Sorters {
>     def compareVersions = { afile, bfile ->
>         return getVersion(afile).toInteger() <=> getVersion(bfile).toInteger()
>     }
> }
>
> and called with:
>
> res.sort(Sorters.compareVersions)
>
>
> Any thoughts are appreciated!  Thanks!!
>
>
>
> On Mon, May 16, 2016 at 11:43 AM, Søren Berg Glasius (GR8Conf EU) <
> sbglasius@gr8conf.org> wrote:
>
>> Hi
>>
>> You can define it in a class as a static closure
>>
>>
>> class Sorters {
>>      static compareVersions =  { a,b ->
>>          return getVersion(a).toInteger() <=> getVersion(b).toInteger()
>>      }
>> }
>>
>> and use it like:
>>
>> list.sort(Sorters.compareVersions)
>>
>> Best regards,
>> Søren Berg Glasius
>> GR8Conf Europe organizing team
>>
>> GR8Conf ApS
>> Mobile: +45 40 44 91 88, Web: www.gr8conf.eu, Skype: sbglasius
>> Company Address: Buchwaldsgade 50, 5000 Odense C, Denmark
>> Personal Address: Hedevej 1, Gl. Rye, 8680 Ry, Denmark
>> --- GR8Conf - Dedicated to the Groovy Ecosystem
>>
>> From: Guy Matz <guymatz@gmail.com> <guymatz@gmail.com>
>> Reply: users@groovy.apache.org <users@groovy.apache.org>
>> <users@groovy.apache.org>
>> Date: May 16, 2016 at 17:42:21
>> To: users@groovy.apache.org <users@groovy.apache.org>
>> <users@groovy.apache.org>
>> Subject:  Re: re-using a comparison closure
>>
>> Thanks!  Now, I have a number of methods that need access to that closure
>> . . .  Can I make the closure global?  Is there a better way?
>>
>> Thanks again,
>> Guy
>>
>> On Mon, May 16, 2016 at 11:30 AM, Søren Berg Glasius (GR8Conf EU) <
>> sbglasius@gr8conf.org> wrote:
>>
>>> Hi Guy
>>>
>>> Just assign the variable
>>>
>>> def comapreVersions = { a,b ->
>>> return getVersion(a).toInteger() <=> getVersion(b).toInteger()
>>> }
>>>
>>> and then use it in your sort:
>>>
>>>
>>> list.sort(compareVersions)
>>>
>>>
>>>
>>> Best regards,
>>> Søren Berg Glasius
>>> GR8Conf Europe organizing team
>>>
>>> GR8Conf ApS
>>> Mobile: +45 40 44 91 88, Web: www.gr8conf.eu, Skype: sbglasius
>>> Company Address: Buchwaldsgade 50, 5000 Odense C, Denmark
>>> Personal Address: Hedevej 1, Gl. Rye, 8680 Ry, Denmark
>>> --- GR8Conf - Dedicated to the Groovy Ecosystem
>>>
>>> From: Guy Matz <guymatz@gmail.com> <guymatz@gmail.com>
>>> Reply: users@groovy.apache.org <users@groovy.apache.org>
>>> <users@groovy.apache.org>
>>> Date: May 16, 2016 at 17:28:34
>>> To: users@groovy.apache.org <users@groovy.apache.org>
>>> <users@groovy.apache.org>
>>> Subject:  re-using a comparison closure
>>>
>>> Hi!
>>> I have to sort a list of strings based on a number within the string . .
>>> .  I am able to sort using something like:
>>> list.sort( { a,b -> getVersion(a) <=> getVersion(b)})
>>>
>>> I need to use this in a bunch of places in my code and was hoping to
>>> replace it with a method, like:
>>> list.sort( compareVersions)
>>>
>>> with compareVersions:
>>> def compareVersions(a, b) {
>>>   return getVersion(a).toInteger() <=> getVersion(b).toInteger()
>>> }
>>>
>>> putting the method (compoareVersions) into the sort as a param doesn't
>>> work.  Anyone know what I'm missing?
>>>
>>> Thanks!!
>>> Guy
>>>
>>>
>>
>

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