Hello everybody,
is there a way to check, if a class exists? I create classes dynamically
and would like to know before, if a class with that name already exists.
Thanks for your help
Bernd
···
--
Posted via http://www.ruby-forum.com/.
Try a const_get. Like so:
def class_exists?(name)
begin
true if Kernel.const_get(name)
rescue NameError
false
end
end
···
On 7/4/07, Bernd <burnt99@hotmail.com> wrote:
Hello everybody,
is there a way to check, if a class exists? I create classes dynamically
and would like to know before, if a class with that name already exists.Thanks for your help
Bernd--
Posted via http://www.ruby-forum.com/\.
--
- Simen
Simen Edvardsen wrote:
Try a const_get. Like so:
def class_exists?(name)
begin
true if Kernel.const_get(name)
rescue NameError
false
end
end
Hi,
first of all, thanks for your help, Simen. I think, I even found a
better solution, I assign the name to the class with
Object.const_set class_name, klass
So I can determine, whether the class exists with
Object const_defined? class_name
You are using exception handling (rescue) for a conditional branch,
which I try to avoid whenever possible, to keep my code well structured.
Simen Edvardsen wrote:
>>
>
> Try a const_get. Like so:
>
> def class_exists?(name)
> begin
> true if Kernel.const_get(name)
> rescue NameError
> false
> end
> endHi,
first of all, thanks for your help, Simen. I think, I even found a
better solution, I assign the name to the class withObject.const_set class_name, klass
So I can determine, whether the class exists with
Object const_defined? class_name
You are using exception handling (rescue) for a conditional branch,
which I try to avoid whenever possible, to keep my code well structured.
There is a const_defined? method? Ah, I see it's been some time since
I programmed Ruby. Excuse my ignorant advice, it seems you find a
better solution 
···
On 7/4/07, Bernd Burnt <djbearhand@gmx.de> wrote:
> On 7/4/07, Bernd <burnt99@hotmail.com> wrote:
--
Posted via http://www.ruby-forum.com/\.
--
- Simen