It would actually be very nice if there was some way to (optionally) prevent
null being passed into constructors and function calls. There has been more
than once that I would have liked to have that feature.
I wonder if that’s something we can add to Falcon?
On Nov 16, 2015, at 12:43 PM, Michael Schmalle <teotigraphix...@gmail.com>
wrote:
> On Mon, Nov 16, 2015 at 5:40 AM, OmPrakash Muppirala <bigosma...@gmail.com>
> wrote:
>
>> Nope, you can still call new Singleton(null) and the compiler won't say
>> anything :-)
>> The 'enforcer' is required because of this loophole.
>>
>>
> Yeah, you're right, to early in the morning.. :)
>
>
>> Thanks,
>> Om
>>
>> On Mon, Nov 16, 2015 at 2:36 AM, Michael Schmalle <
>> teotigraphix...@gmail.com
>>> wrote:
>>
>>> On Mon, Nov 16, 2015 at 4:14 AM, OmPrakash Muppirala <
>> bigosma...@gmail.com
>>>>
>>> wrote:
>>>
>>>> Purely pedantic, but the code does not do anything to 'enforce' the
>>>> singleton-ness of the class.
>>>>
>>>
>>> The compiler won't even let you compile this code, so the != is just
>> sauce
>>> that never gets eaten. Since you have to pass an instance of
>>> SingletonEnforcer, it's private and the compiler will bitch.
>>>
>>> Mike.
>>>
>>>
>>>>
>>>> It should actually be:
>>>> public function Singleton(e:SingletonEnforcer){
>>>> if(e != null)
>>>> {
>>>> trace("new instance of singleton created");
>>>> }
>>>> }
>>>>
>>>> On Mon, Nov 16, 2015 at 12:54 AM, yishayw <yishayj...@hotmail.com>
>>> wrote:
>>>>
>>>>> Actually the comment above 'class SingletonEnforcer' explains it.
>>>>>
>>>>> package{
>>>>> public class Singleton{
>>>>> private static var _instance:Singleton=null;
>>>>> public function Singleton(e:SingletonEnforcer){
>>>>> trace("new instance of singleton created");
>>>>> }
>>>>> public static function getInstance():Singleton{
>>>>> if(_instance==null){
>>>>> _instance=new Singleton(new SingletonEnforcer());
>>>>> }
>>>>> return _instance;
>>>>> }
>>>>> }
>>>>> }
>>>>> //I’m outside the package so I can only be accessed internally
>>>>> class SingletonEnforcer{
>>>>> //nothing else required here
>>>>> }
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>>
>>>>
>>>
>> http://apache-flex-development.2333347.n4.nabble.com/FlexJS-FalconJX-Internal-Classes-tp50091p50102.html
>>>>> Sent from the Apache Flex Development mailing list archive at
>>> Nabble.com.
>>>>>
>>>>
>>>
>>
