What does the select function do?

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#1

what does the select function do?

#4

it gets the value of the table in index and the other stuff beyond like string.sub but to tables

it is a useless function too, might be useful when

how it works 
local function Select(Index, ...)
	local Length = #{...}

	if Index == "#" then
		return Length 
	elseif Index < 0 or Index > Length then
		Index = Length 
	end

	local Results = {}

	for i=Index, Length do
		table.insert(Results, ({...})[i])
	end

	return table.unpack(Results)
end

print(select(1, "1", "2", "9")) -- "1", "2", "9"
print(select(2, "1", "2", "9")) -- "2", "9"
print(select(3, "1", "2", "9")) -- "9"

print(select("#", "1", "2", "9")) -- "3" because its #Table oops
print(select(-1, "1", "2", "9")) -- "9"
6 Likes
#5

I mean in reality it just retrieves the values from a tuple from given index to the end of the tuple

2 Likes
#6

thanks but how can you know how a built-in function works ( its source code).

#7
  • command bar
  • function documentation

and using the little info, create one myself if you can

#8

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