Post by lokeloski in Lil Programming Questions

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Regarding conditionals, do "if" statements support "and" and "or"? I've been doing some testing in the Listener and it seems to work, but I'm unsure if I got the syntax right. The same goes for using ">" or "<" with "=". I used, for example:

if a = X and b = Y
<code1>
elseif a < or = W
<code2>
else
<code3>
end

That seems to work but I've never used syntax like this, so I'm unsure if I'll be messing something up down the line depending on these conditional results.

And on an unrelated note, is there any editor that highlights Lil's syntax? I'm getting into territory where I have to click around a lot to modify things that bugged out due to some unintended modification and I always forget to change some bits of code in a widget tucked somewhere. I've been using TextEdit to quickly find and modify these, but a proper editor seems a better solution for long-term projects.

Internet Janitor82 days ago(+1)

In Lil, the "&" and "|" operators provide logical AND and logical OR. Both "conform" to the elements of lists:

(1,1,0,0) & (1,0,1,0)  # -> (1,0,0,0)
(1,1,0,0) | (1,0,1,0)  # -> (1,1,1,0)

To be more precise, these operators are actually binary "minimum" and "maximum" operators for numbers:

(1,2,3,4) & 2          # -> (1,2,2,2)
(1,2,3,4) | 2          # -> (2,2,3,4)

As always, be careful to remember that Lil expressions are carried out right-to-left unless you include parentheses.

For comparisons, Lil has < (less), > (more), and = (equal). It does not have "compound" symbols like "<=", ">=", or "!=". If you want the complementary operation, you can use ! (negation):

  a > b      # a is more than b
! a > b      # a is not more than b (a <= b)
  a < b      # a is less than b
! a < b      # a is not less than b (a >= b)
  a = b      # a is equal to b
! a = b      # a is not equal to be (a != b)

Note that all of these operations work to lexicographically compare strings, too:

"Apple" < "Aardvark","Blueberry"    # -> (0,1)
"Apple" & "Aardvark","Blueberry"    # -> ("Aardvark","Apple")
"Apple" | "Aardvark","Blueberry"    # -> ("Apple","Blueberry")

Lil syntax highlighting profiles for vim, emacs, and Sublime Text are available at the Decker Github Repo.

Syntax highlighting is also available in the Lil Playground.

lokeloski82 days ago(+1)

Oh, I forgot about the right-to-left reading, now it makes sense why some conditionals were returning 1 even if not all conditions were true. Now, if I understood it correctly, the following code would be truthy?

a.value:4 #slider a
b.value:5 #slider b
if (a=4) & (b=5)
go[card2]
end

It seems to work in the Listener, I just want to make sure I got it.

The "!" negation also worked perfectly on some tests I did, which solved some issues for me. Thanks!

itch.io

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