Easy way to see if something is in an array through value instead of index?

When using a dictionary you can check if something is in it very easily like so:

local dict = {
	["whatever"] = "yeh",
	["stuff"] = "ok",
}

if dict["whatever"] then
	-- Do your stuff
end

As you can see it can be done very easily by seeing if the given dictionary contains that key, however with a typical array you cannot do that, you must do it by index.

local array = {"yeh", "ok"}

-- array["yeh"] will not work and will return nil
-- To find if a value is in it or not you have to run a for loop or know the index

-- By index
if array[1] then
	-- Do your stuff
end

-- By for loop

for _, v in pairs(array) do
	if v == "yeh" then
		-- Do your stuff
	end
end

This is not that big of a problem as I can easily make a function like this

local function findIn(value, array)
	for _, v in pairs(array) do
		if v == value then return true end
	end
	return false
end

I would simply like to know if there is a simpler way to do this.