differents

[Kage 37]

what is the differents between:

 

if fibaro:getValue(lamp, "value") > "0"

 

and this line

 

if (tonumber(fibaro:getValue(lamp, "value")) > 0)

 

i know one line is smaller than the other

but is the first line for letters and the second for numbers only

or there is a substantial difference

 

also this

 

tonumber ("0") or just 0 or "0"

 

thanks

[boerremk 84]

I hope this will help:

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[Kage 37]

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/emoticons/default_icon_biggrin.gif" alt=":-D" />  not at all

 

i understand what it is what you wrote.

But do not see what that has to do with my question (or maybe everything but i dont see it

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/emoticons/default_icon_redface.gif" alt=":oops:" /> )

[A.Socha 133]

2 examples in one you got numbers in other you got string but the result can be diffrent

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[pjvik 3]

To try to clarify:

"10" is text for the number of 10, you can not do any calculations on the text. In the example the text in the value mystring. To do calculations on the value mastering you have to convert it a number, this you with tonumber(mystring). If you do a simple adding of tonumber(mystring)+tonumber(mystring) you will get 20. If you leave out to number here you will try to add together two texts.

[petergebruers 1,268]

For completeness lua string compare, does exist!

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I quote:

Lua compares strings in alphabetical order, which follows the locale set for Lua. For instance, with the European Latin-1 locale, we have "acai" < "açaí" < "acorde".

And for that same reason, "5" > "10" is true (the example of Mr Socha.)!

If you don't know the type of variable "x", you can find out by printing it:

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