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