Assertion failed: Expected function

[wnowicki 3]

When I'm trying to run this code

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I'm getting this error:

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Could someone help me here?

[jakub.jezek 353]

Maybe try following timeout:

 

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Edited April 22, 2020 by jakub.jezek
Coma removed behind function()

[petergebruers 1,265]

Remove the extra () in SetTimeout, like this

 

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[wnowicki 3]

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That's really strange way of using anonymous function ? I can confirm that both ways are working. I'd go with `fibaro.setTimeout(10000, went)` as it is a little bit more readable. 

[petergebruers 1,265]

2 minutes ago, wnowicki said:

That's really strange way of using anonymous function ?

I see you use the correct terminology here... "anonymous function". Because of that, I am assuming you might be interested in a little background. Here is a little Lua secret: Lua does not have named functions, all functions are anonymous!

 

Sounds weird? It probably sounds as if I am wrong because you write it like this...

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...that sounds like you created a function with name "went" - does it not? No, it does not, because that is syntactic sugar for defining a variable and storing an anonymous function in it. You can write it like this:

 

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That is effectively the same. So when you call fibaro.setTimeout(10000, went) you are actually passing the contents of variable "went" and after 10 seconds setTimout will "call that function with no arguments". Adding () to went like this setTimeout(10000, went()) would not pass a function to setTimout, it would call function in "went" and pass the result of that call as 2nd argument- which in your case is not a function because "went()" does not return anything. That is why the error in your original post is "Assertion failed: Expected function".

 

When you do "fibaro.getValue(...)" you are calling an anonymous function, stored in field "getValue" of table "fibaro". Again, the function is anonymous, but we c an call it because it was stored somewhere...

[wnowicki 3]

@petergebruers thanks for that explanation, right we want to pass a reference as an argument and it would be called later on inside `setTimeout()`

[jgab 2,048]

@petergebruers explains the "secret" behind named functions  

Here is even more details about the different syntaxes you can stumble on

 

 

The reason for using a anonymous function for ex. setTimeout, and why it's common to see that in code,  is if you need to pass arguments to the function

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[iTibor 1]

Hi

I have this code , I check the opening sensor and I gave his state to global variable wamessage .... and with  hub.callUI I would like to send to me trought whatsapp message

 

local door = fibaro. get (391, "value") 

    if (door) then  

    print (hub.getName(391).. " opened") 

    local message = hub.getName(391) .. " opened"

    fibaro.setGlobalVariable(wamessage, message) 

    hub.callUI(513, 'onReleased', 'button6_1')

    else 

 

And for the following line fibaro.setGlobalVariable(...)  I get this error: "Assertion failed: Expected string"

 

Can you help me?

[iTibor 1]

19 hours ago, iTibor said:

Hi

I have this code , I check the opening sensor and I gave his state to global variable wamessage .... and with  hub.callUI I would like to send to me trought whatsapp message

 

local door = fibaro. get (391, "value") 

    if (door) then  

    print (hub.getName(391).. " opened") 

    local message = hub.getName(391) .. " opened"

    fibaro.setGlobalVariable(wamessage, message) 

    hub.callUI(513, 'onReleased', 'button6_1')

    else 

 

And for the following line fibaro.setGlobalVariable(...)  I get this error: "Assertion failed: Expected string"

 

Can you help me?

 Update>

 

The correct and working syntax is:

fibaro.setGlobalVariable("wamessage", message)