LUA Questions

[KristianO 15]

Hi,

Since I'm fairly new to LUA i have some questions. Thanks for all help!

- Can i create a record in the Event log using LUA? Eg. to monitor the execution for scenes.

- Im using a customer VD for my Samsung TV, but id like to change the volume slider to instead control the volume of my SONOS speaker. How?

- Does it matter if i use single ' or double " with text strings?

- When should i really use semikolons?

- Does it matters how to i use brackets in conditions? Does the first bracket make any sense?

eg.if (tonumber(fibaro:getValue(36, "value")) > 0 and tonumber...

[petergebruers 1,268]

I'll quickly answer what I know. Lua definitive guide is

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1) Write to event panel: not possible. Alternative: send yourself a mail or if you run your own web server it's technically possible to dump information there. I vaguely remember seeing it mentioned somewhere

2) Samsung / Sonos slider... I don't know. I suppose you want this because you have a playbar connected to your TV?

3) Single versus double quote. Doesnt't matter but... I have my preference. With double quotes I can say "It doesn't matter" and with single quotes it has to be 'It doesn\'t matter'

4) I can't remember when I last used a semicolon. It's only in the language to solve "ambiguous" statements. I don't know why they are so popular... they are c/c#/java thingies I think... So you can write on a single line:

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Look ma! No semicolons!

5) Brackets are only needed if the standard precedence (see "3.4.7 Precedence" in the lua manual) doesn't suit your purpose. Or for clarity, of course

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[KristianO 15]

Thanks a lot! It all makes sense!

2) Yes, a playbar and would help a lot.

[Dalle1985 16]

4) I can't remember when I last used a semicolon. It's only in the language to solve "ambiguous" statements. I don't know why they are so popular... they are c/c#/java thingies I think... So you can write on a single line:

Code:

if a > b then fibaro:debug("'a' is greater than 'b'") end

Look ma! No semicolons!

Semicolons are just a carret character. So if you are writing multiple lines of code on a single line (which is poor coding practice to begin with if you ask me) you use semicolons to divide the line into sequential lines.

But it is right, when you see it in Lua, it is mainly due to people having a hard time giving it up. Many languages require them as "enter" is just seen as a whitespace and not read as a new line.