Hi David,
That's a good question, if .strung is not a class, then it should just be a
string which is a .class so I now think it shouldn't work.
In either case I would not expect an error - just for it to return .true
all the time.
Now confused Jon
On 11 March 2015 at 15:26, David Ashley <[email protected]> wrote:
> So why doesn't Jon's method throw an error? Are you not invoking a method
> on a class that does not exist (the isa method)? Why does that not throw an
> error?
>
> David Ashley
>
> On 03/11/2015 10:12 AM, Rick McGuire wrote:
>
> Jon's method doesn't throw an error either.
>
> Rick
>
> On Wed, Mar 11, 2015 at 11:03 AM, David Ashley <[email protected]>
> wrote:
>
>> But I wanted something that queries for the existence of the class. I do
>> not want an error thrown if the class does not exist. I just want to know
>> whether or not the class actually exists. Your .context method does that.
>>
>> David Ashley
>>
>>
>> On 03/11/2015 09:58 AM, Rick McGuire wrote:
>>
>>
>>
>> On Wed, Mar 11, 2015 at 10:55 AM, David Ashley <[email protected]>
>> wrote:
>>
>>> That works for builtin classes, but not for user defined classes. I
>>> want something that can query both.
>>>
>>
>>
>> That method works just fine for any class that is visible in the
>> environment. It is not just restricted to the builtin classes.
>>
>> Rick
>>
>>
>>>
>>>
>>> David Ashley
>>>
>>>
>>> On 03/11/2015 09:52 AM, Sahananda (Jon) Wolfers wrote:
>>>
>>> Would this do?
>>>
>>> say .string~isa(.class)
>>> 1
>>> ........................................... rexxtry.rex on WindowsNT
>>> say .strung~isa(.class)
>>> 0
>>> ........................................... rexxtry.rex on WindowsNT
>>>
>>> Jon
>>>
>>> On 11 March 2015 at 14:48, David Ashley <[email protected]>
>>> wrote:
>>>
>>>> Rick -
>>>>
>>>> Is there a way to query ooRexx to discover if a class exists? I think
>>>> this would be a good addition if that functionality does not exist.
>>>>
>>>> David Ashley
>>>>
>>>>
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