RE: [flexcoders] Casting not working to avoid "Changes to property, length...will not be detected" warning
Well, the binding is going to work right? You’re
just going to get the warning (which you can turn off in flex-config in
production). Casting length to a number isn’t going to work, what you’d
want to do to avoid the warning is cast the Array to something else (like
Object). However if you do that you’re at risk of it not working at all
because the binding mechanism will mess with the Array instance in
unpredictable ways. So I think doing the variable declaration is probably your
best bet if you want to keep warnings on but avoid the issue with your length
function.
Of course the other thing you could do is
create a utility function getArrayLength that simply returns the array’s length.
Then you could bind to the result of the function:
function getArrayLength(arr:Array):Number
{
return arr.length;
}
Matt
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Tracy Spratt
Sent: Tuesday, June 21, 2005 6:44
PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Casting
not working to avoid "Changes to property, length...will not be detected"
warning
Yes, that will work, plus one should
always type their variables.
But I would rather not have to create this
extra var if I don’t have to.
The Casting trick usually works, but not
in this situation.
Tracy
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Thijs Triemstra | Collab
Sent: Tuesday, June 21, 2005 9:06
PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Casting
not working to avoid "Changes to property, length...will not be
detected" warning
i usually make a var in actionscript and bind this to mxml..
// actionscript
var binding = (Number(app.p('DrawingData').valuesarray.length)
== 0);
// in mxml
i also would like to know if that is the best/only way to do it..
Thijs
Op 22-jun-2005, om 2:41 heeft Tracy Spratt het volgende geschreven:
I
have a custom object, and in the example line below,
an
instance is returned by a function. The object has a
property, “valuesarray”, which is typed as an Array.
This
is a case where I would like binding to correctly, but I am getting the binding
warning.
I
tried casting the length to a Number:
visible="{Number(app.p('DrawingData').valuesarray.length)
== 0}"
but
I still get the same warning:
“Changes to
property, length, from built-in object, Array, will not be detected”
I
can code around this but I have it in several places, and
would like to be able to make this solution work.
I
know Matt’s actually working, but does anyone else have any ideas?
Tracy
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RE: [flexcoders] Casting not working to avoid "Changes to property, length...will not be detected" warning
Yes, that will work, plus one should always
type their variables.
But I would rather not have to create this
extra var if I don’t have to.
The Casting trick usually works, but not
in this situation.
Tracy
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf
Of Thijs Triemstra | Collab
Sent: Tuesday, June 21, 2005 9:06
PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Casting
not working to avoid "Changes to property, length...will not be
detected" warning
i usually make a var in actionscript and bind this to mxml..
// actionscript
var binding = (Number(app.p('DrawingData').valuesarray.length)
== 0);
// in mxml
i also would like to know if that is the best/only way to do it..
Thijs
Op 22-jun-2005, om 2:41 heeft Tracy Spratt het volgende geschreven:
I
have a custom object, and in the example line below,
an
instance is returned by a function. The object has a
property, “valuesarray”, which is typed as an Array.
This
is a case where I would like binding to correctly, but I am getting the binding
warning.
I
tried casting the length to a Number:
visible="{Number(app.p('DrawingData').valuesarray.length)
== 0}"
but
I still get the same warning:
“Changes to
property, length, from built-in object, Array, will not be detected”
I
can code around this but I have it in several places, and
would like to be able to make this solution work.
I
know Matt’s actually working, but does anyone else have any ideas?
Tracy
Yahoo! Groups Links
To visit your group on
the web, go to:
http://groups.yahoo.com/group/flexcoders/
To unsubscribe from
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Re: [flexcoders] Casting not working to avoid "Changes to property, length...will not be detected" warning
i usually make a var in actionscript and bind this to mxml..// actionscriptvar binding = (Number(app.p('DrawingData').valuesarray.length) == 0);// in mxmli also would like to know if that is the best/only way to do it..ThijsOp 22-jun-2005, om 2:41 heeft Tracy Spratt het volgende geschreven: I have a custom object, and in the example line below, an instance is returned by a function. The object has a property, “valuesarray”, which is typed as an Array.This is a case where I would like binding to correctly, but I am getting the binding warning.I tried casting the length to a Number: visible="{Number(app.p('DrawingData').valuesarray.length) == 0}"but I still get the same warning:“Changes to property, length, from built-in object, Array, will not be detected”I can code around this but I have it in several places, and would like to be able to make this solution work.I know Matt’s actually working, but does anyone else have any ideas?TracyYahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/flexcoders/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
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[flexcoders] Casting not working to avoid "Changes to property, length...will not be detected" warning
Title: Casting not working to avoid "Changes to property, length...will not be detected" warning
I have a custom object, and in the example line below, an instance is returned by a function. The object has a property, “valuesarray”, which is typed as an Array.
This is a case where I would like binding to correctly, but I am getting the binding warning.
I tried casting the length to a Number:
visible="{Number(app.p('DrawingData').valuesarray.length) == 0}"
but I still get the same warning:
“Changes to property, length, from built-in object, Array, will not be detected”
I can code around this but I have it in several places, and would like to be able to make this solution work.
I know Matt’s actually working, but does anyone else have any ideas?
Tracy
Yahoo! Groups Links
To visit your group on the web, go to:http://groups.yahoo.com/group/flexcoders/
To unsubscribe from this group, send an email to:[EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
