Help with if condition

Hi malojo,

I have tried your code and the problem seems to be that the if action is not resolving correctly the null value... trace(hoteldata[hotel1].hname
) returns null... get(hoteldata[hotel1].hname) returns null... but if(hoteldata[hotel1].hname != null , ....) does not resolve correctly... it is like If() is not checking for the "null object" but check for a value... and it resolve that this value is not equal to null....(hope that the above has some sense )

Perhaps that is a bug ...

So, I think you can resolve this, in setting the value to "null" and check to to the value != "null". Like this:

<hoteldata name="hotel1" hname="null" hurl="null" />
....
if(get(hoteldata[hotel1].hname) != "null" ,additem(get(hoteldata[hotel1].hname), openurl(get(hoteldata[hotel1].hurl),_blank)) );
....

Hope this can help.

SAlut.

Hi malojo,

Yes, you are right ...
if(variable == "value" ,do something , else another thing)
so, if hname = "123":
if(get(hoteldata[hotel1].hname) == "123", .....)
is like:
if( 123 = "123",....)
123 is a variable (not defined in this case), so the condition is false ...

SAlut.

Zitat

if(get(hoteldata[hotel1].hname) != null ,additem(get(hoteldata[hotel1].hname), openurl(get(hoteldata[hotel1].hurl),_blank))
);

Hi,

the if() action works a bit different at the moment:
- get(var) can't be used, it automatically uses the content of a variable,
- if a variable doesn't exists, the name of the given variable is used,

e.g. when hname is set to "xyz":

if(hoteldata[hotel1].hname != null , ...)

the if will become to:

if(xyz != null , ...)

but when hoteldata[hotel1].hname was NOT set, the if will become finally to:

if('hoteldata[hotel1].hname' != null , ...)

I know - not ideally!
the reason for that behavior was that originally there were no quotes (') for strings,
so everything could be a either a string or a variable,
I'm still thinking about to change that...

best regards,
Klaus

My temp. workaround for "does the plugin/hotspot exist?" in the current scene is
eg.
if(hotspot[video].name == video, dosomething, dosomethingelse);

Seems a little bit annoying to "compair a plugins attribute against this attribute itself"
but it was the ONLY reliable way to ensure its existance -
If the plugin/hotspot was not defined before the if-condition delivers a "FALSE"-value.
You surely could use any other attribute of it instead of its name but using the name ensures to have always the right value to compare with...

Any other/better method?