Re: HashMap which can be indexed by tuples

[Philipp Janda <siffiejoe@...>]

Am 01.07.2015 um 04:44 schröbte Siddhartha Jain:
> Hi,

Hi!

> I'm trying to find a hash map for Lua that can be indexed by a tuple. I
> thought I had found it in sano but there seems to be something wrong with
> the code that is online -- I'm getting errors if I run it in lua or luajit
> (the offending function[1] is below)
>
> So any suggestions for alternatives and/or suggestions to fix sano would be
> most welcome :)

How about this one:

  http://siffiejoe.github.io/lua-multikey/

If you only need it for memoization, there are some more candidates at 
the bottom of this page:

  http://lua-users.org/wiki/FuncTables

> Thanks!
> --Sid

Philipp



> [1] local function memoizedKnownArgs(func, numArgs)
> local results = {}
> if numArgs == 1 then
> return function(...)
> local t = results*[arg[1endlongstringliteral*
> if t == nil then
> t = func(arg[1])
> results*[arg[1endlongstringliteral* = t
> end
> return t
> end
> else
> error("only works for memoizing 1 param functions")
> end
> end