OP asked: "How can I set a value for a class such that all instances of said class get that value change automatically"
I said "you have to change a property on the main class's prototype... a la MyClass.prototype.bSwitch = true;"
Yes, it gives rise to confusion later on and the OP will have to experience this for himself... but if that's what he wants, that's how to do it, and that _is_ what he asked how to do.
Which is what I think he's saying as well. You need to set it at a class level, not at the object level. Modifying the prototype will not modify all of the instances (according to Andrew, haven't verified it or anything, but I think he's right). So, if you set a class-level Boolean it should keep it's state across all instances of that class. Or maybe I haven't woken up yet J
Greg
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Ryan Gahl
Sent: Thursday, June 22, 2006 7:27 AM
To: [email protected]
Subject: Re: [Rails-spinoffs] Implementing a boolean "switch" in a Class
Right, but the original's poster was looking for precisely a way to chance a property in the main function ("class") and have that change instantly propagate to all instances.
On 6/21/06, Andrew Tetlaw <[EMAIL PROTECTED]> wrote:
On 21/06/06, Ryan Gahl <[EMAIL PROTECTED] > wrote:
> MyObject.prototype.bSwitch = true; is the correct way to achieve what you
> are looking for.
Personally I wouldn't recommend doing this because of the potential
for confusion.
MyObject.prototype.bSwitch = true; is not exactly a class property
because each instance can be changed individually.
You can set it like this, sure
MyObject.prototype.bSwitch = true
and then oMyInstance1.bSwitch = true and oMyInstance2.bSwitch = true
But if you then set oMyInstance1.bSwitch = false; it'll only change it
for the instance and not the class. Which means you are
reading/setting in different ways leading to potential
confusion/mistakes.
--
Andrew Tetlaw
htp://tetlaw.id.au
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