trying to call a function passed as an argument

Hi all,

I have this method where I need to call a function passed as
an argument
(kind of like in setInterval()) and I don't understand the
documentation and
can't get it to work.

First of all, I don't understand how to pass the function
as a parameter.
Am I passing a String or an actual Function object?  Can I
pass a Function
with parameters?  Do I have to write the parentheses in the
parameter?

Next, how do I call this function?  The Function.call()
function requires a
parameter but I don't get what it does...

Thanks for the help!

-Elie

Here is the structure I have:

class Bar {
  public Bar() {
  }

  public function doLast(bString:String) {
    trace("the second string is "+bString);
  }
}

class Foo {
  var bar:Bar;

  public Foo() {
    bar = new Bar();
    doFirst("hello", "world",
bar.doLast);
  }

  public function doFirst(aString:String, bString:String,
aFunction:Function) {
    trace("the first string is "+aString);

    // call the second function here ???
    aFunction.call(??);
  }
}
_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.c
om

Try something like this:

...
doFirst( "hello", "world", bar,
"doLast" );
...
 
public function doFirst( aS:String, bS:String, o:Object,
m:String )
{
    trace("the first string is "+aString);

    // call the second function here ???
   a[ method ].apply( a, ... args... );
}

~neo

ps:
Interestingly enough addEventListener in AS3 does 
what your code wants to do implicitly ;p

-----Original Message-----
From: flashcoders-bounceschattyfig.figleaf.com
[mailto:flashcoders-bounceschattyfig.figleaf.com] On
Behalf Of Elie
Zananiri
Sent: 29 June 2006 09:22 PM
To: flashcoderschattyfig.figleaf.com
Subject: [Flashcoders] trying to call a function passed as
an argument

Hi all,

I have this method where I need to call a function passed as
an argument
(kind of like in setInterval()) and I don't understand the
documentation and
can't get it to work.

First of all, I don't understand how to pass the function
as a parameter.
Am I passing a String or an actual Function object?  Can I
pass a Function
with parameters?  Do I have to write the parentheses in the
parameter?

Next, how do I call this function?  The Function.call()
function requires a
parameter but I don't get what it does...

Thanks for the help!

-Elie

Here is the structure I have:

class Bar {
  public Bar() {
  }

  public function doLast(bString:String) {
    trace("the second string is "+bString);
  }
}

class Foo {
  var bar:Bar;

  public Foo() {
    bar = new Bar();
    doFirst("hello", "world",
bar.doLast);
  }

  public function doFirst(aString:String, bString:String,
aFunction:Function) {
    trace("the first string is "+aString);

    // call the second function here ???
    aFunction.call(??);
  }
}
_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training http://www.figleaf.com
http://training.figleaf.c
om

_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.c
om

damn, should be:

o[ method ].apply( o, ... args... );


Long day...

~neo


-----Original Message-----
From: flashcoders-bounceschattyfig.figleaf.com
[mailto:flashcoders-bounceschattyfig.figleaf.com] On
Behalf Of neo binedell
Sent: 29 June 2006 10:42 PM
To: 'Flashcoders mailing list'
Subject: RE: [Flashcoders] trying to call a function passed
as an argument

Try something like this:

...
doFirst( "hello", "world", bar,
"doLast" ); ...
 
public function doFirst( aS:String, bS:String, o:Object,
m:String ) {
    trace("the first string is "+aString);

    // call the second function here ???
   a[ method ].apply( a, ... args... );
}

~neo

ps:
Interestingly enough addEventListener in AS3 does what your
code wants to do
implicitly ;p

-----Original Message-----
From: flashcoders-bounceschattyfig.figleaf.com
[mailto:flashcoders-bounceschattyfig.figleaf.com] On
Behalf Of Elie
Zananiri
Sent: 29 June 2006 09:22 PM
To: flashcoderschattyfig.figleaf.com
Subject: [Flashcoders] trying to call a function passed as
an argument

Hi all,

I have this method where I need to call a function passed as
an argument
(kind of like in setInterval()) and I don't understand the
documentation and
can't get it to work.

First of all, I don't understand how to pass the function
as a parameter.
Am I passing a String or an actual Function object?  Can I
pass a Function
with parameters?  Do I have to write the parentheses in the
parameter?

Next, how do I call this function?  The Function.call()
function requires a
parameter but I don't get what it does...

Thanks for the help!

-Elie

Here is the structure I have:

class Bar {
  public Bar() {
  }

  public function doLast(bString:String) {
    trace("the second string is "+bString);
  }
}

class Foo {
  var bar:Bar;

  public Foo() {
    bar = new Bar();
    doFirst("hello", "world",
bar.doLast);
  }

  public function doFirst(aString:String, bString:String,
aFunction:Function) {
    trace("the first string is "+aString);

    // call the second function here ???
    aFunction.call(??);
  }
}
_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training http://www.figleaf.com
http://training.figleaf.c
om

_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training http://www.figleaf.com
http://training.figleaf.c
om

_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.c
om

This is how I do it:


var functA:Function = function(){
	trace("A");
}

var functB:Function = function(){
	trace("B");
}

function performFunctions(funct:Function){
	funct();
}

performFunctions(functA);

performFunctions(functB);


Doug Coning 
Senior Web Development Programmer
FORUM Solutions, LLC
 
> -----Original Message-----
> From: flashcoders-bounceschattyfig.figleaf.com
[mailto:flashcoders-
> bounceschattyfig.figleaf.com] On Behalf Of Elie Zananiri
> Sent: Thursday, June 29, 2006 3:22 PM
> To: flashcoderschattyfig.figleaf.com
> Subject: [Flashcoders] trying to call a function passed
as an argument
> 
> Hi all,
> 
> I have this method where I need to call a function
passed as an
argument
> (kind of like in setInterval()) and I don't understand
the
documentation
> and
> can't get it to work.
> 
> First of all, I don't understand how to pass the
function as a
parameter.
> Am I passing a String or an actual Function object? 
Can I pass a
Function
> with parameters?  Do I have to write the parentheses in
the parameter?
> 
> Next, how do I call this function?  The Function.call()
function
requires
> a
> parameter but I don't get what it does...
> 
> Thanks for the help!
> 
> -Elie
> 
> Here is the structure I have:
> 
> class Bar {
>   public Bar() {
>   }
> 
>   public function doLast(bString:String) {
>     trace("the second string is "+bString);
>   }
> }
> 
> class Foo {
>   var bar:Bar;
> 
>   public Foo() {
>     bar = new Bar();
>     doFirst("hello", "world",
bar.doLast);
>   }
> 
>   public function doFirst(aString:String,
bString:String,
> aFunction:Function) {
>     trace("the first string is "+aString);
> 
>     // call the second function here ???
>     aFunction.call(??);
>   }
> }
> _______________________________________________
> Flashcoderschattyfig.figleaf.com
> To change your subscription options or search the
archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs
> 
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.c
om
_______________________________________________
Flashcoderschattyfig.figleaf.com
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcode
rs

Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.c
om