Re: ideas for lambda syntax

[oliver <oliver.schoenborn@...>]

Thanks Luiz, that's exactly what I was looking for. A quick comparison, hopefully this is not too far off the mark: 

1. llex+proxy patch (http://lua-users.org/lists/lua-l/2010-11/msg00808.html) 
• very small footprint (change and speed)
• but requires patching the Lua lexer (C)
• works with both Lua 5.1 and 5.2
• further token extensions would require further patch to lexer
• precludes LuaMacro
• could coexist with MetaLua
• Lua script compiled with patched Lua should run in non-patched Lua
2. LuaMacro: 
• requires (your) tokenf patch to Lua source, tested only for Lua 5.1
  
• medium footprint, involves approx 1000 lines of Lua code
  
• further token extensions only require extra Lua code
• requires macro module and macro defs to be loaded by interpreter prior to script (-l switch)
  
• Lua script compiled with patched Lua should run in non-patched Lua
  
• no maintenance in 2 years (maybe good enough as is)
3. MetaLua:
• pure Lua 5.1
• large footprint (size and likely but not checked, compile speed), approx 5000 lines of Lua code
• run via batch file
• further token extensions only require extra (meta)Lua code
• not updated in 18 months (latest v0.5), manual still at v0.4

On Mon, Apr 8, 2013 at 10:12 PM, Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> wrote:

> what would be the simplest syntax that would involve the least modification
>

>     \(x,y) [x+a*y]
>     @(x,y) (x+a*y)
>     \\(x,y) x+a*y\\
>     [(x,y) x+a*y]

All but the last one are easily handled by token filters, especially ones
written in C. For the syntax
        \x,y (x+a*y)
see
        http://lua-users.org/lists/lua-l/2010-11/msg00808.html
        http://lua-users.org/lists/lua-l/2012-03/msg00309.html