Mapping values from one table to another

["Greg Bakker" <gbakker@...>]

Hi,

I'm curious as to how best to create a table via a direct mapping from another.

For example, say you want

    { 1, 2, 3 }  =>  { {name="something1", value=1}, {name="something2", value=2}, {name="something3", value=3} }

Currently I'm using

    function map(f, v, ...)
      if v then
        return f(v), map(f, ...)
      end
    end

    function func(v) return {name="something"..v, value=v} end

    a = { 1, 2, 3 }
    b = { map(func, unpack(a)) }

which is probable stack abuse. Is there a canonical approach; maybe a better way is to use a loop and insert-at-end?

Thanks,
Greg Bakker