Function overloading in flex?

Hi
Is it possible to function overloading in flex?
Any send me example.
Regards
D.Mahesh Babu

ActionScript aims to follow the EcmaScript 4 language specification which does not include method overloading. The two have diverged somewhat because EcmaScript 4 is still in a proposal stage and is subject to change. Read more here:
http://en.wikipedia.org/wiki/ECMAScript
A proposed EcmaScript feature called generic functions may offer capabilties similar to method overloading. It is possible such a feature may find its way into ActionScript 4, but I'm not aware of any official announcements to that effect.

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Function Overloading concept in PL/SQL

hi all,
do we have Function Overloading concept in PL/SQL? If so, how to implement it? can anybody help me out with an example?

Yep.
SQL> create or replace
2 package test_package as
3
4     function blah(param IN NUMBER) return number;
5     function blah(param IN DATE) return number;
6     function blah(param IN VARCHAR2) return number;
7
8     -- or
9
10     function blah(param IN NUMBER) return date;
11     function blah(param IN NUMBER) return varchar2;
12     function blah(param IN NUMBER) return char;
13
14 end test_package;
15 /
Package created.

Function Overloading in PL/SQL

Hi Guyz,
I have 2 questions regarding function overloading.
1) Is it necessary for the functions to be inside a package to perform function overloading ?
2) I have 2 functions :-
a) function check_hello( P_INPUT1 VARCHAR2, P_INPUT2 NUMBER) RETURN BOOLEAN
b) function check_hello( P_INPUT1 VARCHAR2, P_INPUT2 NUMBER) RETURN VARCHAR2
The difference is the return type . I dont think this is possible since the signature of the arguments are the same. I just need to confirm that its not possible.
Thanks.

Hi,
user3913664 wrote:
Hi Guyz,
I have 2 questions regarding function overloading.
1) Is it necessary for the functions to be inside a package to perform function overloading ?Yes; stand-alone functions cannot be overloaded.
2) I have 2 functions :-
a) function check_hello( P_INPUT1 VARCHAR2, P_INPUT2 NUMBER) RETURN BOOLEAN
b) function check_hello( P_INPUT1 VARCHAR2, P_INPUT2 NUMBER) RETURN VARCHAR2
The difference is the return type . I dont think this is possible since the signature of the arguments are the same. I just need to confirm that its not possible.Exactly. How could you, the system, or anyone else determine which one to use?
Give them different names, or add another argument if you really want them to have the same name.

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Recently I was reading the Oracle tech magazin. There was an article in it about the next java major release ( J2SE 1.5 tiger). It said the tiger release will support the ellipsis ("...") concept for parameter passing. I have seen this in C/C++ for passing variable number of arguments in functions like printf() or scanf(). I am not sure has there such a concept already in java but if we are going to have such a mechanism, wont that affect the function overloading concept? Please post ur opinions
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Function overloading advantage..

Hi,
One of the package feature is function overloading i.e same name objects with different parameters or different datatype parameters.
how does it(function overloading) increase the performance ?
what are the benefits with function overloading ?
Thanks in advance.
RP

how does it(function overloading) increase the performance ?It doesn't.
what are the benefits with function overloading ?Consider this:
SQL> CREATE OR REPLACE PACKAGE pkg AS
2     PROCEDURE print(p IN VARCHAR2);
3     PROCEDURE print(p IN DATE, msk IN VARCHAR2 := 'DD-MON-YYYY');
4     PROCEDURE print(p IN NUMBER);
5     PROCEDURE print(p IN VARCHAR2, totem IN VARCHAR2);
6 END;
7 /
Package created.
SQL>
SQL> CREATE OR REPLACE PACKAGE BODY pkg AS
2   PROCEDURE print(p IN VARCHAR2) IS
3   BEGIN
4    dbms_output.put_line(p||'!');
5   END;
6   PROCEDURE print(p IN DATE, msk IN VARCHAR2 := 'DD-MON-YYYY' ) IS
7   BEGIN
8    print(to_char(p, msk));
9   END;
10   PROCEDURE print(p IN NUMBER) IS
11   BEGIN
12    print(to_char(p));
13   END;
14   PROCEDURE print(p IN VARCHAR2, totem IN VARCHAR2) IS
15   BEGIN
16    print(totem||' '||p);
17   END;
18 END;
19 /
Package body created.
SQL>
SQL> set serveroutput on
SQL>
SQL> exec pkg.print(user)
B!
PL/SQL procedure successfully completed.
SQL> exec pkg.print(sysdate)
07-MAR-2006!
PL/SQL procedure successfully completed.
SQL> exec pkg.print(sysdate, 'HH24:MI:SS')
11:18:59!
PL/SQL procedure successfully completed.
SQL> exec pkg.print(1234)
1234!
PL/SQL procedure successfully completed.
SQL> exec pkg.print(user, '>>>')
B!PL/SQL procedure successfully completed.
SQL> exec pkg.print(to_char(sysdate), 'HH24:MI:SS')
HH24:MI:SS 07-MAR-06!
PL/SQL procedure successfully completed.
SQL> I can pass any value into my package without having to worry about its datatype. Similarly I can pass different numbers of arguments into the procedure without worrying. Of course, a similar effect can be gained from using default values but we don't always want that.
Incidentally, note what happened when I passed in a date as a character string.
Cheers, APC

Function overloading ... Is there any benefit ?

Where is the benefit if I write this ..
using function overloading :
add(Integer, Integer);
add(String, String);
instead of
addInt(Integer, Integer);
addStr(String, String);
Is there any benefit ?

why you are saying "add() *does not contain an argument type name*"?The statement that you are still claiming to find unclear was 'embed the argument type names in the function name'. The function name 'add()' doesn't do that. Your alternative function name 'addInt() does do that. 'Int'. A type name. Embedded in the function name.
Am I missing something ?Yes. I don't see how you can agree that add() is shorter than addInt() without also seeing that the difference consists precisely of the embedded type name. Frankly, I don't think you have been reading very carefully.

How to check if a function exists in Flex?

Hi,
I am wondering if there is any method to check if a function exists in Actionscript/Flex.
The same way as we do isdefined in javascript.
Thank you
Mayank

On instances - use Object hasOwnProperty method - all objects in AS3 inherit from Object:
var mc:MovieClip = new MovieClip();
var s:Sprite = new Sprite();
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Function Overloading in sql

is there any way by which one can over load function with out affecting any change in .net code or sql proc or function which refer that function

No, there is no way to "overload" a function.
However, what you are describing can be done by creating a layer of stored procs and views the .Net code calls instead of direct accessing the database. This gives the SQL developer the ability to change the physical database and change the layer
to match the same output, without changing the .Net code.
See "Stored procedures vs dynamic SQL":
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protected function button_clickHandler(event:MouseEvent):void
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I'm new to Flex and need to special case some functionality
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"Cole_62" <[email protected]> wrote in
message
news:gd2q5r$f08$[email protected]..
> no i dont think this will work because i need to iterate
through each
> <item> in
> the XML...below is an exmaple of possible tree structure
of the XML:
> channel
> -->item1
> ----->title
> ----->imgs
> --------->imgUrl
> --------->imgUrl
> -->item2
> ----->title
> ----->imgs
> ---------->imgUrl
> -->item3
> ------>title
> ------>imgs
> ----------->(no imgs)
>
> i thought to handle this using something like the
ATTACHED CODE below:
>
> ...i need to be able to go through each <item> and
<imgUrl> (because i
> dont
> know how many (if any) there are!) sorry if my PHP
background shines
> through!
>
> THANKS!
>
> <mx:Repeater id="feed"
dataProvider="{XML.channel.item}">
> <mx:HBox>
> <mx:Text text="{feed.currentItem.title}"/>
> <mx:Repeater id="item"
dataProvider="{feed.currentItem.imgs}">
> 
> <mx:Image source="{item.currentItem.imgUrl}"/>
> </mx:Repeater>
> </mx:HBox>
> </mx:Repeater>
How bout
<mx:Repeater id="feed"
dataProvider="{XML.channel.item}">
<mx:HBox>
<mx:Text text="{feed.currentItem.title}"/>
<mx:Repeater id="item"
dataProvider="{feed.currentItem.imgs}">
<mx:Image
source="{item.currentItem.imgURL.length()>0?item.currentItem.imgURL:null}"
includeInLayout="{item.currentItem.imgURL.length()>0}"/>
</mx:Repeater>
</mx:HBox>
</mx:Repeater>

Function overloading on return types

consider following two overloaded functions
public int functionA(int a,int b);
public char functionA(int a,int b)and if i call them like this
int returnInt = functionA(a,b)
char returnChar = functionA(a,b)in this scenario which function to call can be decided depending on the
return type then why java don have overloading on the basis of return type ?

Try it.

Query Compilation Error - Function overloaded

I'm trying to use 2 document style web services in a query. When I test the query
I get:
tart server side stack trace:
java.rmi.RemoteException: EJB Exception:; nested exception is:
     java.rmi.RemoteException: Query Compilation Error (Type Checks) 1-3-1-3: Function
Employees1:ProcessDocument() is overloaded.
java.rmi.RemoteException: Query Compilation Error (Type Checks) 1-3-1-3: Function
Employees1:ProcessDocument() is overloaded.
     at com.bea.ldi.server.QueryBean.execute(Unknown Source)
     at com.bea.ldi.server.QueryBean_1ao78o_EOImpl.execute(QueryBean_1ao78o_EOImpl.java:306)
     at com.bea.ldi.server.QueryBean_1ao78o_EOImpl_WLSkel.invoke(Unknown Source)
     at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:362)
     at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
     at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)
     at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:821)
     at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:308)
     at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)
End server side stack trace
Can someone tell me what this error means?
Thank you,
Jason

Release Note Entry:
When designing Workshop web services, you may need to alter the
Targetnamespace for a web service if a method name in this web service
clashes with a method name in another web service that uses the same
Targetnamespace.
"Mike Reiche" <[email protected]> wrote:
>
"A function with the same name has multiple definitions in the configuration.
Check
you configuration"
Check for multiple definitions of Employees1:ProcessDocument() in your
CFLD file(s).
- Mike
"Jason Levine" <[email protected]> wrote:
I'm trying to use 2 document style web services in a query. When I test
the query
I get:
tart server side stack trace:
java.rmi.RemoteException: EJB Exception:; nested exception is:
     java.rmi.RemoteException: Query Compilation Error (Type Checks) 1-3-1-3:
Function
Employees1:ProcessDocument() is overloaded.
java.rmi.RemoteException: Query Compilation Error (Type Checks) 1-3-1-3:
Function
Employees1:ProcessDocument() is overloaded.
     at com.bea.ldi.server.QueryBean.execute(Unknown Source)
     at com.bea.ldi.server.QueryBean_1ao78o_EOImpl.execute(QueryBean_1ao78o_EOImpl.java:306)
     at com.bea.ldi.server.QueryBean_1ao78o_EOImpl_WLSkel.invoke(Unknown
Source)
     at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:362)
     at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:114)
     at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)
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     at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:308)
     at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
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     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)
End server side stack trace
Can someone tell me what this error means?
Thank you,
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JSP 2.0 EL Function Overloading

Can methods defined as EL functions be overloaded?
I have a class with two overloaded methods. Both of them are declared with "public static" and one of them is defined as an EL function through a taglib. When trying to invoke the method defined as an EL function, I get an error indicating it's trying to run the other version of the method, not the version defined as an EL function.
What's weird is that if I rearrange the order of the overloaded methods in my class it works fine. It's as if EL is just looking for the first method with a name matching what's defined in the tablib and attempting to run it.
I'm running WebLogic Server 10 on WinXP.

Either declare it non-public or assign it another name.

Function overloading in flex?

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