Re: [NTG-context] Lua to Context Table

2 Aug 2014


      
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On Aug 2, 2014, Aditya Mahajan  wrote:
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On Sat, 2 Aug 2014, luigi scarso wrote:
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On Sat, Aug 2, 2014, John Kitzmiller  wrote:
Here is Lua code that prints the first nine fibonacci numbers:
local function fib(n)
 f={1,1}
...the Wiki entries, CLD, and tried Aditya's method from Stack Exchange; I am
missing something.
You have a *global* table f  that collides with the internals of context
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local function fib(n)
local f={1,1}
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This version recomputes all fibnocci numbers from scrach each time. Here 
is a memoized version:
local fibs = {1, 1}
local function fib(n)
  if fibs[n] == nil then
    print(">>>>", "Computing fib:" .. n)
    fibs[n] = fib(n-1) + fib(n-2)
  end
...
Thanks to you both! I missed the global/local conflict, and then learned a way to avoid double computation; thanks again!

John