diff --git a/lib/iter.luau.old b/lib/iter.luau.old
deleted file mode 100644
index 9ff7144..0000000
--- a/lib/iter.luau.old
+++ /dev/null
@@ -1,214 +0,0 @@
---[[
-    Reference: https://doc.rust-lang.org/std/slice/struct.Iter.html
-]]
-
-local option = require("option")
-type Option<T> = option.Option<T>
-local Some = option.Some
-local None = option.None
-
-local result = require("result")
-type Result<T, E> = result.Result<T, E>
-
-local Iter = {}
-type Iter<T> = typeof(Iter) & {
-	_inner: { T },
-	_rev: { T }?,
-	_currentPos: number,
-	_length: number,
-}
-
-local function revTable(tab: {})
-	local tbl = tab
-
-	for i = 1, #tbl // 2, 1 do
-		tbl[i], tbl[#tbl - i + 1] = tbl[#tbl - i + 1], tbl[i]
-	end
-
-	return tbl
-end
-
-function Iter.new<T>(iterable: { T })
-	return setmetatable(
-		{
-			_inner = iterable,
-			_currentPos = 0,
-			_len = #iterable,
-		} :: Iter<T>,
-		{
-			__index = Iter,
-		}
-	)
-end
-
-function Iter.nextBack<T>(self: Iter<T>): Option<T>
-	local elem = table.remove(self._inner, #self._inner)
-
-	if elem == nil then
-		return None()
-	end
-
-	return Some(elem)
-end
-
-function Iter.nthBack<T>(self: Iter<T>, n: number): Option<T>
-	local rev = self._rev or revTable(self._inner)
-	local elem: T? = rev[n]
-
-	if elem ~= nil then
-		return Some(elem)
-	end
-
-	return None()
-end
-
--- function Iter.advanceBackBy<T>(self: Iter<T>, n: number): Result<(), number> end
-
---@canError
-function Iter.tryRfold<T, B, R, E>(self: Iter<T>, init: B, f: (B, T) -> Result<R, E>): R
-	local accum = init
-
-	local next: Option<T> = self:nextBack()
-	while next:isSome() do
-		accum = f(accum :: B, next:getInner() :: T):unwrap()
-		next = self:nextBack()
-	end
-
-	return accum
-end
-
-function Iter.rfold<T, B, R>(self: Iter<T>, init: B, f: (B, T) -> R): B
-	local accum: B | R = init
-
-	local next: Option<T> = self:nextBack()
-	while next:isSome() do
-		accum = f(accum :: B, next:getInner() :: T)
-		next = self:nextBack()
-	end
-
-	return accum :: B
-end
-
-function Iter.rfind<T, P>(self: Iter<T>, predicate: (T) -> boolean): Option<T>
-	local rev = self._rev or revTable(self._inner)
-
-	for _, val in rev do
-		if predicate(val) == true then
-			return Some(val)
-		end
-	end
-
-	return None()
-end
-
-function Iter.len<T>(self: Iter<T>): number
-	return #self._inner
-end
-
-function Iter.next<T>(self: Iter<T>): Option<T>
-	local nextIdx = self._currentPos + 1
-
-	if nextIdx > self._length then
-		return None()
-	end
-
-	self._currentPos = nextIdx
-	return Some(self._inner[nextIdx])
-end
-
-function Iter.count<T>(self: Iter<T>): number
-	local count = self._currentPos
-
-	-- "Consume" self
-	self = self.new({})
-
-	return count
-end
-
-function Iter.nth<T>(self: Iter<T>, n: number): Option<T>
-	local elem: T? = self._inner[n]
-
-	if elem ~= nil then
-		return Some(elem)
-	end
-
-	return None()
-end
-
-function Iter.last<T>(self: Iter<T>): Option<T>
-	local val = self._inner[self._length]
-
-	-- "Consume" self
-	self = self.new({})
-
-	if val == nil then
-		-- Should only occur when iterator is empty
-		return None()
-	end
-
-	return Some(val)
-end
-
-function Iter.fold<T, B>(self: Iter<T>, init: B, f: (B, T) -> B)
-	local accum = init
-
-	local next: Option<T> = self:nextBack()
-	while next:isSome() do
-		accum = f(accum, next:getInner() :: T)
-		next = self:nextBack()
-	end
-
-	return accum
-end
-
-function Iter.forEach<T>(self: Iter<T>, f: (T) -> nil): ()
-	for _, v in self._inner do
-		f(v)
-	end
-end
-
-function Iter.all<T>(self: Iter<T>, f: (T) -> boolean): boolean
-	for _, v in self._inner do
-		local predicate = f
-
-		if predicate(v) == false then
-			return false
-		end
-	end
-
-	return true
-end
-
-function Iter.any<T>(self: Iter<T>, f: (T) -> boolean): boolean
-	for _, v in self._inner do
-		local predicate = f
-
-		if predicate(v) == true then
-			return true
-		end
-	end
-
-	return false
-end
-
-function Iter.find<T>(self: Iter<T>, predicate: (T) -> boolean): Option<T>
-	local next = self:next()
-
-	while next:isSome() do
-		local inner: T = next:getInner()
-		if predicate(inner) == true then
-			return Some(inner)
-		end
-
-		next = self:next()
-	end
-
-	return None()
-end
-
--- TODO: findMap after filterMap
-function Iter.findMap<T, B>(self: Iter<T>, f: (T) -> Option<B>): Option<B>
-	return nil :: any
-end
-
-return Iter