Missing operators in L5 (lua)

L5
1

Hi there,

it looks like some operators are missing, like:

  • //: integer division
  • ~:bitwise XOR
  • &, | (bitwise AND and OR)

Is there any way (or plan) to add them?

Thank you

2

Welcome to the forum.

Processing supports multiple languages so to answer your question we need to know which mode /language you are interested in.
:smile:

3

Thanks!

Added to the title for clarity.

4

ā€œL5ā€ is the latest added category so far. This time for the Lua flavor on top of the Lƶve2D framework:

5

Never used L5 / Lua so canā€™t help you there.

@lee might be able to help. He will get notified of this post.

6

Hi everyone!

L5 is built with LOVE framework, which uses LuaJIT. It includes a Lua Bit Operations Module.

  1. //: integer division is native floor division, written like this: floor(a/b)
  2. ~:bitwise XOR, is written as: bit.bxor(x1 [,x2...])
  3. &, | (bitwise AND and OR) are written as: bit.band(x1 [,x2...]) (or more args) and bit.bor(x1 [,x2...]).

By default this bit module is loaded at runtime (so you can just run these examples above), but itā€™s slightly faster to load it at the start of your main.lua file local bit = require('bit') to make the dependency explicit and limit scope and provide faster access to bit.* functions. See the BitOp API page for more info. (Update: Reading more into this, i think itā€™s also required to explicitly require the bit module on Silicon-based macs/iOS because the JIT compiler is turned off by default on these)

If someone reading this wants to produce a good Bitwise operations tutorial for the L5lua tutorial pages, or to convert these 4 Processing bitwise tutorials to L5 (which are CC-BY NC SA licensed) that would be great :slight_smile:

7

Fantastic, thank you! I had a go with XOR and it did work.

8

Oh great! Iā€™ll try to get some more info about these onto the L5 website so other people can find out about them more readily.

9

Thanks to contributor Nilay Kumar there is now a Bitwise Operators page in the L5 Examples