Is a closure a custom function ?

[Chris Blackwell]

I just noticed that (on lucee 4.5.1.008)

isCustomFunction(function(){}) returns false

Is this the expected behaviour?

I can see that a UDF wouldn't be a closure, but isn't a closure a "Custom Function"?

[Dominic Watson]

A distinction has been made between a UDF and a closure. You can use: IsClosure( someVariable ) to detect closures.

I think it would be useful to have an additional validator function that would return true for both types, IsFunction()?

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[Michael Offner]

we have changed the functionlaity for Lucee 5.

Lucee 5 returns true for udf,closure and lambda, but we also added a new argument "type", so you can do:

isCustomFunction(udf,"closure");

Micha

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[Chris Blackwell]

Thanks Micha,

That makes sense to me as i see all of those as types of custom function.

@Dominic

yes, aware of that function, but given the current implementation i have to check both e.g

if(isClosure(obj) || isCustomFunction(obj))

given the changes Micha has indicated for Railo 5, this becomes just

if(isCustomFunction(obj)) 

Cheers, Chris

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[Dominic Watson]

Brilliant stuff.

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