RE: [flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
You cannot have *statements* outside of class methods.
Actually, you can, but it's unusual to do this. Loose statements in a
class are executed at class initialization time, before any instances
have been created. If pageRO and pageService were statics (i.e.,
properties of the class itself), it would make sense. But since they are
instance properties, it won't even compile.
- Gordon
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Troy Gilbert
Sent: Wednesday, February 14, 2007 9:51 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Re: Silly question? : Why do I have to create
objects inside class functions?
Not exactly right...
The problem is that what you're wanting to do is execute an assignment
statement. You cannot have *statements* outside of class methods.
What you can do is have *initializers* as part of *declarations*. So,
you can do this:
public class MyClass
{
public var myVar:String = some text;
public var myOtherVar:Singleton = Singleton.getInstance();
}
You have to make the assignment at the point where you declare the
variable (so it actually becomes what is called an initializer).
The initialization statement will be executed as part of the
constructor's prologue (immediately before you constructor code is
called), i.e. when you call new MyClass();.
Troy.
On 2/14/07, helihobby [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
wrote:
I re-read your question and the answer is no you can not.
The reason is becuase Flex is event driven.
What you can do is add to the Application tag flag of:
creationComplete=init()
and use inside the class:
public function init():void{
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , rumpleminzeflickr
[EMAIL PROTECTED] wrote:
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , helihobby helihobby@ wrote:
I think you forgot to add var unless you define a private
var at
the
top.
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I
create new
objects or even assign a null object a value in the class
itself?
It works fine if I do it in a function. Just trying to
understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
[flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
Thank you all this makes sense now :)
This forum has helped me a lot thank you again!
--- In flexcoders@yahoogroups.com, Gordon Smith [EMAIL PROTECTED] wrote:
You cannot have *statements* outside of class methods.
Actually, you can, but it's unusual to do this. Loose statements in a
class are executed at class initialization time, before any instances
have been created. If pageRO and pageService were statics (i.e.,
properties of the class itself), it would make sense. But since they are
instance properties, it won't even compile.
- Gordon
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Troy Gilbert
Sent: Wednesday, February 14, 2007 9:51 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Re: Silly question? : Why do I have to create
objects inside class functions?
Not exactly right...
The problem is that what you're wanting to do is execute an assignment
statement. You cannot have *statements* outside of class methods.
What you can do is have *initializers* as part of *declarations*. So,
you can do this:
public class MyClass
{
public var myVar:String = some text;
public var myOtherVar:Singleton = Singleton.getInstance();
}
You have to make the assignment at the point where you declare the
variable (so it actually becomes what is called an initializer).
The initialization statement will be executed as part of the
constructor's prologue (immediately before you constructor code is
called), i.e. when you call new MyClass();.
Troy.
On 2/14/07, helihobby [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
wrote:
I re-read your question and the answer is no you can not.
The reason is becuase Flex is event driven.
What you can do is add to the Application tag flag of:
creationComplete=init()
and use inside the class:
public function init():void{
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , rumpleminzeflickr
rumpleminze@ wrote:
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , helihobby helihobby@ wrote:
I think you forgot to add var unless you define a private
var at
the
top.
--- In flexcoders@yahoogroups.com
mailto:flexcoders%40yahoogroups.com , rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I
create new
objects or even assign a null object a value in the class
itself?
It works fine if I do it in a function. Just trying to
understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
[flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
I think you forgot to add var unless you define a private var at the
top.
--- In flexcoders@yahoogroups.com, rumpleminzeflickr
[EMAIL PROTECTED] wrote:
Hi,
This maybe a really dumb question, but why I can't I create new
objects or even assign a null object a value in the class itself?
It works fine if I do it in a function. Just trying to understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
[flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com, helihobby [EMAIL PROTECTED] wrote:
I think you forgot to add var unless you define a private var at the
top.
--- In flexcoders@yahoogroups.com, rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I create new
objects or even assign a null object a value in the class itself?
It works fine if I do it in a function. Just trying to understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
[flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com, helihobby [EMAIL PROTECTED] wrote:
I think you forgot to add var unless you define a private var at the
top.
--- In flexcoders@yahoogroups.com, rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I create new
objects or even assign a null object a value in the class itself?
It works fine if I do it in a function. Just trying to understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
[flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
I re-read your question and the answer is no you can not.
The reason is becuase Flex is event driven.
What you can do is add to the Application tag flag of:
creationComplete=init()
and use inside the class:
public function init():void{
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
--- In flexcoders@yahoogroups.com, rumpleminzeflickr
[EMAIL PROTECTED] wrote:
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com, helihobby helihobby@ wrote:
I think you forgot to add var unless you define a private var at
the
top.
--- In flexcoders@yahoogroups.com, rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I create new
objects or even assign a null object a value in the class
itself?
It works fine if I do it in a function. Just trying to
understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
Re: [flexcoders] Re: Silly question? : Why do I have to create objects inside class functions?
Not exactly right...
The problem is that what you're wanting to do is execute an assignment
statement. You cannot have *statements* outside of class methods.
What you can do is have *initializers* as part of *declarations*. So, you
can do this:
public class MyClass
{
public var myVar:String = some text;
public var myOtherVar:Singleton = Singleton.getInstance();
}
You have to make the assignment at the point where you declare the variable
(so it actually becomes what is called an initializer).
The initialization statement will be executed as part of the constructor's
prologue (immediately before you constructor code is called), i.e. when you
call new MyClass();.
Troy.
On 2/14/07, helihobby [EMAIL PROTECTED] wrote:
I re-read your question and the answer is no you can not.
The reason is becuase Flex is event driven.
What you can do is add to the Application tag flag of:
creationComplete=init()
and use inside the class:
public function init():void{
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
--- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com,
rumpleminzeflickr
[EMAIL PROTECTED] wrote:
They are declared in the format
public var pageService:PageService;
--- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com,
helihobby helihobby@ wrote:
I think you forgot to add var unless you define a private var at
the
top.
--- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com,
rumpleminzeflickr
rumpleminze@ wrote:
Hi,
This maybe a really dumb question, but why I can't I create new
objects or even assign a null object a value in the class
itself?
It works fine if I do it in a function. Just trying to
understand
i'm
sure there is a good reason.
Many thanks,
public class MyClass
{
// doesn't work here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
public function Foo():void{
// works here
pageRO = new RemoteObject();
pageService = PageService.getInstance();
}
}
