hi = [x*2 for _, x in ipairs{1,2,3,4}]

items = {1,2,3,4,5,6}

_ = [z for z in ipairs items when z > 4]

rad = [{a} for a in ipairs {
	 1,2,3,4,5,6,
} when good_number a]


_ = [z for z in items for j in list when z > 4]

require "util"

dump = (x) -> print util.dump x

range = (count) ->
	i = 0
	return coroutine.wrap ->
		while i < count
			coroutine.yield i
			i = i + 1

dump [x for x in range 10]
dump [{x, y} for x in range 5 when x > 2 for y in range 5]

things = [x + y for x in range 10 when x > 5 for y in range 10 when y > 7]

print x,y for x in ipairs{1,2,4} for y in ipairs{1,2,3} when x != 2

print "hello", x for x in items

_ = [x for x in x]
x = [x for x in x]

print x,y for x in ipairs{1,2,4} for y in ipairs{1,2,3} when x != 2

double = [x*2 for x in *items]

print x for x in *double

cut = [x for x in *items when x > 3]

hello = [x + y for x in *items for y in *items]

print z for z in *hello


-- slice
x = {1, 2, 3, 4, 5, 6, 7}
print y for y in *x[2,-5,2]
print y for y in *x[,3]
print y for y in *x[2,]
print y for y in *x[,,2]
print y for y in *x[2,,2]

a, b, c = 1, 5, 2
print y for y in *x[a,b,c]


normal = (hello) ->
	[x for x in yeah]


test = x 1,2,3,4,5
print thing for thing in *test

_ = -> a = b for row in *rows

with tb
	f [a] -- indexing
	f [a,] -- list with one element
	print v for v in *f[a,] -- table slicing in for-loop
	f [] -- empty list
	f[] = x -- table appending to f
	[a] = x -- assign to tb[a]
	[a,] = x -- list destructuring for x
	[] = x -- table appending to tb
	c = a in [1] -- check if a in tb[1]
	c = a in [1,] -- check if a == 1
	c = a in {1} -- check if a == 1
	c = a in {1,} -- check if a == 1

do
	[a, b] = hello
	[name = "nameless", job = "jobless"] = person

do
	transactions = ["T001", "T002", "T003", "T004", "T005"]
	middleTransactions = transactions[2, -2]
	print middleTransactions -- => {"T002", "T003", "T004"}

do
	logs =
		- start: 0, end: 100
		- start: 100, end: 200
		- start: 200, end: 123
	print logs[#].end -- => 123

do
	pendingOrders = ["O001", "O002", "O003", "O004"]
	print pendingOrders[# - 1] -- => "O003"	

do
	getOrders = ->
		{
			{ id: "O1001", status: "pending" }
			{ id: "O1002", status: "processing" }
			{ id: "O1003", status: "done" }
		}

	lastStatus = getOrders()[#].status
	assert lastStatus == "done"

do
	cloneList1 = (list) -> list[,]
	cloneList2 = (list) -> [...list,]
	cloneTable = (tb) -> {...tb}

do
	print(
		globalTB[#]
		a.b.c[# - 2]
		x?\y?!.z?[# - 3]
	)

do
	f = ->
		print(
			globalTB[#]\end 123
			a.b.c[5,-5][# - 2]
			x?\y?!.z?[# - 3]?[, -3]
		)

nil