RE: table.concat - why so complex?

["Martijn van Buul (Ellips B.V.)" <martijn.van.buul@...>]

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* Peter Hickman
> The reason is to cut down on the number of strlen / strcpy 
> operations required at the C level. Just a trade off of memory 
> for performance.

This is untrue. First of all, there is no strlen() involved; 
all string lengths are known in advance (it's kept in the 
len-field of the TValue object representing the string) and the amount 
of memcpy()'s can only be HIGHER, since intermediate copies are being 
made which could have been prevented.

Note that I wasn't suggesting something like

local result = ""

for _, str in ipairs(sourceArray) do
  result = result .. str
end

Instead, I was suggesting something that can't be implemented in lua
directly - but table.concat is implemented in C as it is.