ESP8266 Community Forum

Posted: **Sat Aug 20, 2016 12:30 pm**

Previous posts have noted that ALL variables appear to be assigned string status initially - but it's a bit more complicated than that!

Code: Select all

x=27
y=27
if x=y then print "The same!" else print "Different!"
end

results in: "Comparaison between string and number!" on lines 2 and 3.

Code: Select all

x=0
y=0
x=27
y=27
if x=y then print "The same!" else print "Different!"
end

gives the same error on lines 2, 4 and 5. However...

Code: Select all

x = 27
y = 27
if x=y then print "The same!" else print "Different!"
end

results in "The same!" (ie the correct result)

According to the latest documentation,

Spaces are don’t care :

A = 5 + 3 is the same as a=5+3

Clearly this is not the case!

Phil

Posted: **Sat Aug 20, 2016 7:27 pm**

Can you point out in the docs where it says the spaces don't matter?

For assignment of a value to variable you must have spaces around the = sign.

x = 0

x = 27

Posted: **Sun Aug 21, 2016 4:29 pm**

The quote in my e-mail is from the last two lines in the section headed "SPECIFICITY OF THE NEW PARSER".

Phil

Posted: **Sat Aug 27, 2016 12:41 pm**

I have now tested this point more carefully.

The only space that seems to matter is the one between the variable getting the value and the '=' sign. So:

Code: Select all

a=1+2          will NOT work
a = 1 + 2      does work.  But...
a =1+2         also works!
print a&b&c    Also works fine

So it seems that the initial space is the only one that is essential, though including others may make for better layout and readability.

Phil

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